Solar System Archives

August 4, 2013December 23, 2015 by Ken Kremer

Curiosity rover Celebrates 1 Year on Mars with Dramatic Discoveries

Curiosity accomplished Historic 1st drilling into Martian rock at John Klein outcrop on Feb 8, 2013 (Sol 182), shown in this context mosaic view of the Yellowknife Bay basin taken on Jan. 26 (Sol 169). The robotic arm is pressing down on the surface at John Klein outcrop of veined hydrated minerals – dramatically back dropped with her ultimate destination; Mount Sharp.
Credit: NASA/JPL-Caltech/Ken Kremer/Marco Di Lorenzo
Story updated with further details[/caption]

NASA’s mega Mars rover Curiosity is celebrating 1 Year on the Red Planet since the dramatic landing on Aug. 6, 2012 by reveling in a string of groundbreaking science discoveries demonstrating that Mars could once have supported past life – thereby accomplishing her primary science goal – and with a promise that the best is yet to come!

“We now know Mars offered favorable conditions for microbial life billions of years ago,” said the mission’s project scientist, John Grotzinger of the California Institute of Technology in Pasadena.

“Curiosity has landed in an ancient river or lake bed on Mars,” Jim Green, Director of NASA’s Planetary Science Division, told Universe Today.

Curiosity is now speeding onwards towards Mount Sharp, the huge 3.4 mile (5. 5 km) mountain dominating the center of her Gale Crater landing site – and which is the primary destination of the mission.

During Year 1, Curiosity has transmitted over 190 gigabits of data, captured more than 71,000 images, fired over 75,000 laser shots to investigate the composition of rocks and soil and drilled into two rocks for sample analysis by the pair of state-of-the-art miniaturized chemistry labs housed in her belly – SAM & CheMin.

“From the sophisticated instruments on Curiosity the data tells us that this region could have been habitable in Mars’ distant past,” Green told me.

“This is a major step forward in understanding the history and evolution of Mars.”

And just in the nick of time for her 1 year anniversary, the car sized robot just passed the 1 mile (1.6 kilometer) driving mark on Aug. 1, or Sol 351.

Mount Sharp still lies roughly 5 miles (8 kilometers) distant – as the Martian crow flies.

“We will be on a general heading of southwest to Mount Sharp,” Jim Erickson, Curiosity Project Manager of NASA’s Jet Propulsion Laboratory (JPL), told Universe Today in an exclusive interview. See the NASA JPL route maps below.

“We have been going through various options of different planned routes.”

How long will the journey to Mount Sharp take?

“Perhaps about a year,” Erickson told me.

“We have put some new software – called autonav, or autonomous navigation – on the vehicle right after the conjunction period back in March 2013. This will increase our ability to drive.”

The total distance driven by NASA's Mars rover Curiosity passed the one-mile mark a few days before the first anniversary of the rover's landing on Mars. This map traces where Curiosity drove between landing at "Bradbury Landing" on Aug. 5, 2012, PDT, (Aug. 6, 2012 (Universal Time and EDT) and the position reached during the mission's 351st Martian day, or sol, (Aug. 1, 2013). The Sol 351 leg added 279 feet (85.1 meters) and brought the odometry since landing to about 1.05 miles (1,686 meters). Credit: NASA/JPL-Caltech/Univ. of Arizona — The total distance driven by NASA’s Mars rover Curiosity passed the one-mile mark a few days before the first anniversary of the rover’s landing on Mars. This map traces where Curiosity drove between landing at “Bradbury Landing” on Aug. 5, 2012, PDT, (Aug. 6, 2012 (Universal Time and EDT) and the position reached during the mission’s 351st Martian day, or sol, (Aug. 1, 2013). The Sol 351 leg added 279 feet (85.1 meters) and brought the odometry since landing to about 1.05 miles (1,686 meters). Credit: NASA/JPL-Caltech/Univ. of Arizona

“We are trying to make that significantly faster by bringing the new autonav online. That will help. But how much it helps really depends on the terrain.”

So far the terrain has not been problematical.

“Things are going very well and we have a couple of drives under our belt,” said Erickson, since starting the long trek to Mount Sharp about a month ago.

The lower reaches of Mount Sharp are comprised of exposed geological layers of sedimentary materials that formed eons ago when Mars was warmer and wetter, and much more hospitable to microscopic life.

“It has been gratifying to succeed, but that has also whetted our appetites to learn more,” says Grotzinger. “We hope those enticing layers at Mount Sharp will preserve a broad diversity of other environmental conditions that could have affected habitability.”

Indeed, Curiosity’s breakthrough discovery that the surface of Mars possesses the key chemical ingredients required to sustain microbial life in a habitable zone, has emboldened NASA to start mapping out the future of Mars exploration.

NASA announced plans to start work on a follow on robotic explorer launching in 2020 and develop strategies for returning Martian samples to Earth and dispatching eventual human missions to Mars in the 2030’s using the new Orion capsule and SLS Heavy lift rocket.

“NASA’s Mars program is back on track with the 2016 InSight lander and the 2020 rover,” Jim Green, Director of NASA’s Planetary Science Division, told Universe Today in an interview.

“Successes of our Curiosity — that dramatic touchdown a year ago and the science findings since then — advance us toward further exploration, including sending humans to an asteroid and Mars,” said NASA Administrator Charles Bolden in a statement.

“Wheel tracks now, will lead to boot prints later.”

Following the hair-raising touchdown using with the never before used sky-crane descent thrusters, the science team directed the 1 ton robot to drive to a nearby area of interesting outcrops on the Gale crater floor – at a place called Glenelg and Yellowknife Bay.

Along the way, barely 5 weeks after landing, Curiosity found a spot laden with rounded pebbles at the Hottah outcrop of concretions that formed in an ancient stream bed where hip deep liquid water once flowed rather vigorously.

In February 2013, Curiosity conducted the historic first ever interplanetary drilling into Red Planet rocks at the ‘John Klein’ outcrop inside Yellowknife Bay that was shot through with hydrated mineral veins of gypsum.

The Yellowknife Bay basin looks like a dried up river bed.

This scene combines seven images from the telephoto-lens camera on the right side of the Mast Camera (Mastcam) instrument on NASA's Mars rover Curiosity on Sol 343 of the rover's work on Mars (July 24, 2013). Credit: NASA/JPL-Caltech/Malin Space Science Systems — This scene combines seven images from the telephoto-lens camera on the right side of the Mast Camera (Mastcam) instrument on NASA’s Mars rover Curiosity on Sol 343 of the rover’s work on Mars (July 24, 2013). The center of the scene is toward the southwest. Credit: NASA/JPL-Caltech/Malin Space Science Systems

Analysis of pulverized portions of the gray colored rocky powder cored from the interior of ‘John Klein’ revealed evidence for phyllosilicates clay minerals that typically form in pH neutral water. These starting findings on the crater floor were unexpected and revealed habitable environmental conditions on Mars – thus fulfilling the primary science goal of the mission.

See herein our context panoramic mosaic from Sol 169 showing the robotic arm touching and investigating the Martian soil and rocks at ‘John Klein’.

And if you take a visit to Washington, DC, you can see our panorama (assembled by Ken Kremer and Marco Di Lorenzo) on permanent display at a newly installed Solar System exhibit at the US National Mall in front of the Smithsonian National Air & Space Museum- details here.

“We have found a habitable environment [at John Klein] which is so benign and supportive of life that probably if this water was around, and you had been on the planet, you would have been able to drink it,” says Grotzinger, summing up the mission.

Curiosity captured unique view of Martian moon Phobos & Diemos together on Sol 351 (Aug 1, 2013). Credit: NASA/JPL/MSSS, contrast enhanced by Marco Di Lorenzo and Ken Kremer — Curiosity captured unique and rare view of tiny Martian moons Phobos & Deimos together on Sol 351 (Aug 1, 2013). Look close and see craters on pockmarked Phobos. Credit: NASA/JPL/MSSS, contrast enhanced by Marco Di Lorenzo and Ken Kremer

On the long road to Mount Sharp, Curiosity will make occasional stops for science.

This past week she captured rare sky watching images of the diminutive Martian moons – Phobos and Deimos – together!

Meanwhile, Curiosity’s 10 year old sister rover Opportunity Is trundling merrily along and will arrive shortly at her own mountain climbing goal on the opposite of Mars.

And NASA’s next Mars orbiter called MAVEN (for Mars Atmosphere and Volatile Evolution), has just arrived intact at the Kennedy Space Center after a cross country trip aboard a USAF C-17.

Technicians at Kennedy will complete final preparations for MAVEN’s blastoff to the Red Planet on Nov. 18 from the Florida Space Coast atop an Atlas V rocket.

On Tuesday, Aug 6, NASA will broadcast a half day of new programming on NASA TV commemorating the landing and discussing the science accomplished so far and what’s coming next.

And stay tuned for more astonishing discoveries during ‘Year 2’ on the Red Planet from our intrepid rover Curiosity – Starting Right Now !

Ken Kremer

Curiosity Route Map From 'Glenelg' to Mount Sharp. This map shows where NASA's Mars rover Curiosity landed in August 2012 at "Bradbury Landing"; the area where the rover worked from November 2012 through May 2013 at and near the "John Klein" target rock in the "Glenelg" area; and the mission's next major destination, the entry point to the base of Mount Sharp. Credit: NASA/JPL-Caltech/Univ. of Arizona — Curiosity Route Map From ‘Glenelg’ to Mount Sharp
This map shows where NASA’s Mars rover Curiosity landed in August 2012 at “Bradbury Landing”; the area where the rover worked from November 2012 through May 2013 at and near the “John Klein” target rock in the “Glenelg” area; and the mission’s next major destination, the entry point to the base of Mount Sharp. Credit: NASA/JPL-Caltech/Univ. of Arizona

August 3, 2013December 23, 2015 by Nancy Atkinson

See the Curiosity Mars Panorama on Permanent Display at the US National Mall

Congratulations to Universe Today writer Ken Kremer and his partner in image editing, Marco Di Lorenzo, who have had one of the panoramas they created from the Curiosity rover’s imagery included in a permanent Solar System exhibit outside the National Air and Space Museum on the US National Mall in Washington, D.C. The exhibit is called “Voyage” and was created by the National Center for Earth and Space Science Education (NCESSE) and is sponsored in part by NASA.

Ken said the NCESSE contacted him a few months ago back to use the mosaic — from Sol 169 of Curiosity’s time on Mars — and the project is finally complete. “They liked and chose it because it evokes a human presence on Mars with the rover in the foreground,” Ken said.

The exhibit is a one to 10-billion scale model of our Solar System—spanning 600 meters (6,000 feet) from the National Air and Space Museum to the Smithsonian Castle Building, and Ken and Marco’s image from the Curiosity rover is part of the information about Mars.

Here’s a description of the exhibit from NCESSE website:

“The Voyage exhibition on the National Mall, installed in 2001, was created through a partnership between Challenger Center for Space Science Education, the Smithsonian Institution, and NASA. A summer 2013 update of this exhibition’s content was undertaken by the National Center for Earth and Space Science Education and the Smithsonian Institution, through a grant from the District of Columbia Space Grant Consortium. To learn more, and view photo albums of all Voyage exhibitions, visit the Voyage National Program page.”

Here’s a closeup of Ken and Marco’s mosaic:

Close up of the Mars placard for the Voyager Solar System exhibit. Image courtesy of Ken Kremer.

And a full view of the image is below.

You can learn more about the exhibit at the NCESSE Voyage webpage. Again, congratulations to Ken and Marco!

July 31, 2013December 23, 2015 by Ken Kremer

MAVEN Takes Final Test Spins, Flexes Solar Panels Before Imminent Trek to Florida Launch Site

The solar panels on the MAVEN spacecraft are deployed as part of environmental testing procedures at Lockheed Martin Space Systems in Littleton, Colorado, before shipment to Florida 0on Aug. 2 and blastoff for Mars on Nov. 18, 213. Credit: Lockheed Martin

The solar panels on NASA’s MAVEN Mars orbiter are deployed as part of environmental testing procedures at Lockheed Martin Space Systems in Littleton, Colorado, before shipment to Florida on Aug. 2 and blastoff for Mars on Nov. 18, 2013. Credit: Lockheed Martin
Watch cool testing videos below![/caption]

MAVEN is NASA’s next mission to Mars and in less than three days time the spacecraft ships out on a cross country trek for the first step on the long sojourn to the Red Planet.

But before all that, technicians took MAVEN for a final spin test, flexed her solar arrays and bombarded her with sound and a whole lot more.

On Aug. 2, MAVEN (Mars Atmosphere and Volatile EvolutioN Mission) journeys half a continent from its assembly facility at Lockheed Martin in Littleton, Colorado to the Kennedy Space Center and the Florida Space Coast aboard a USAF C-17.

Unlike Curiosity, which is roving across a crater floor on the Red Planet at this very moment, MAVEN is an orbiter with a first of its kind mission.

MAVEN is the first spacecraft from Earth devoted to investigating and understanding the upper atmosphere of Mars.

The goal is determining how and why Mars lost virtually all of its atmosphere billions of years ago, what effect that had on the climate and where did the atmosphere and water go?

To ensure that MAVEN is ready for launch, technicians have been busy this year with final tests of the integrated spacecraft.

Check out this video of MAVEN’s Dry Spin Balance Test

The spin balance test was conducted on the unfueled spacecraft on July 9, 2013 at Lockheed Martin Space Systems in Littleton, Colorado.

NASA says the purpose of the test “is to ensure that the fully integrated spacecraft is correctly balanced and to determine the current center of gravity. It allows the engineering team to fine-tune any necessary weight adjustments to precisely fix the center of gravity where they want it, so that it will perform as expected during the cruise to Mars.”

It was the last test to be completed on the integrated spacecraft before its shipment to Florida later this week.

This next video shows deployment tests of the two “gull-wing” solar panels at Lockheed Martin Space Systems.

Wingtip to wingtip, MAVEN measures 11.43 m (37.5 feet) in length.

In mid May, MAVEN was moved into a Thermal Vacuum Chamber at Lockheed Martin for 19 days of testing.

The TVAC test exposed MAVEN to the utterly harsh temperatures and rigors of space similar to those it will experience during its launch, cruise, and mission at Mars.

MAVEN is slated to blast off atop an Atlas V-401 rocket from Cape Canaveral Air Force Station, Florida on Nov. 18, 2013. The 2000 pound (900 kg) spacecraft will be housed inside a 4 meter payload fairing.

After a 10 month interplanetary voyage it will join NASA’s armada of four robotic spacecraft when it arrives in Mars orbit in September 2014.

Scientists hope that measurements from MAVEN will help answer critical questions like whether, when and how long the Martian atmosphere was once substantial enough to sustain liquid water on its surface and support life.

“What we’re doing is measuring the composition of the atmosphere as a measure of latitude, longitude, time of day and solar activities,” said Paul Mahaffy, of NASA’s Goddard Space Flight Center in Greenbelt, Md, and the principal investigator for MAVEN’s mass spectrometer instrument.

“We’re trying to understand over billions of years how the atmosphere has been lost.”

Ken Kremer

…………….
Learn more about MAVEN, Cygnus, Antares, LADEE, Mars rovers and more at Ken’s upcoming lecture presentations

Aug 12: “RockSat-X Suborbital Launch, LADEE Lunar & Antares Rocket Launches from Virginia”; Rodeway Inn, Chincoteague, VA, 8 PM

Oct 3: “Curiosity and the Search for Life on Mars – (3-D)”, STAR Astronomy Club, Brookdale Community College & Monmouth Museum, Lincroft, NJ, 8 PM

NASA’s MAVEN orbiter is due to blast off for Mars on Nov. 18, 2013 atop an Atlas V rocket similar to this which launched Curiosity from Cape Canaveral on Nov. 26, 2011. Credit: Ken Kremer/kenkremer.com

July 28, 2013September 29, 2016 by David Dickinson

A Weird West Tale and the Hunt for Planet Vulcan

A hypothetical Vulcanoid asteroid in orbit about the Sun. ( Artist's impression in the Public Domain).

One of the most fascinating stories in modern astronomy involves the pursuit of a world that never was.

Tomorrow marks the 135^th anniversary of the total solar eclipse of July 29^th, 1878. With a maximum totality of 3 minutes 11 seconds, this eclipse traced a path across western Canada and the United States from the territory of Montana to Louisiana.

A curious band of astronomers also lay in wait along the path of totality, searching for an elusive world known as Vulcan.

Long before Star Trek or Mr. Spock, Vulcan was a hypothetical world thought to inhabit the region between the planet Mercury and the Sun.

The tale of Vulcan is the story of the birth of modern predictive astronomy. Vulcan was a reality to 18^th century astronomers- it can be seen and the astronomy textbooks and contemporary art and culture of the day. Urbain J.J. Le Verrier proposed the existence of the planet in 1859 to explain the anomalous precession of the perihelion of the planet Mercury. Le Verrier was a voice to be taken seriously — he had performed a similar feat of calculation to lead observers to the discovery of the planet Neptune from the Berlin Observatory on the night of September 23, 1846. Almost overnight, Le Verrier had single-handedly boosted astronomy into the realm of a science with real predictive power.

An 1863 photograph of Lescarbault's country house observatory. (Wikimedia Commons image in the public domain). — An 1863 photograph of Lescarbault’s country house observatory. (Wikimedia Commons image in the public domain).

The idea of Vulcan gained traction when a French doctor and amateur astronomer Edmond Lescarbault claimed to have seen the tiny world transit the Sun while viewing it through his 95 millimetre refractor on the sunny afternoon of March 26^th, 1859. Keep in mind, this was an era when solar observations were carried out via the hazardous method of viewing the Sun through a smoked or oil-filled filter, or the via safer technique of projecting the disk and sketching it onto a piece of paper.

A early right-angle solar viewer from the South Carolina State Museum in Columbia, South Carolina. Note the vent holes in the back to disappate heat and word SUN stenciled on the side! (Photo by author). — A early right-angle solar viewer from Robert Ariail collection at the South Carolina State Museum in Columbia, South Carolina. Note the vent holes in the back to dissipate heat, and word SUN stenciled on the side! (Photo by author).

A visiting Le Verrier was sufficiently impressed by Lescarbault’s observation, and went as far as to calculate and publish orbital tables for Vulcan. Soon, astronomers everywhere were “seeing dots” pass in front of the Sun. Astronomer F. A. R. Russell spotted an object transiting the Sun from London on January, 29^th, 1860. Sightings continued over the decades, including a claim by an observer based near Peckeloh Germany to have witnessed a transit of Vulcan on April 4^th, 1876.

Incidentally, we are not immune to this effect of “contagious observations” even today — for example, when Comet Holmes brightened to naked eye visibility in October 2007, spurious reports of other comets brightening flooded message boards, and a similar psychological phenomena occurred after amateur astronomer Anthony Wesley recorded an impact on Jupiter in 2010. Though the event that triggered the initial observation was real, the claims of impacts on other bodies in the solar system that soon followed turned out to be bogus.

Possible "target zone" for the existence of Vulcan, and later Vulcanoid asteroids. — Possible “target zone” for the existence of Vulcan, and later Vulcanoid asteroids. (Graphic in the public domain).

Still, reports of the planet Vulcan were substantial enough for astronomers to mount an expedition to the territory of Wyoming in an attempt to catch dim Vulcan near the Sun during the brief moments of totality. Participants include Simon Newcomb of the Naval Observatory, James Craig Watson and Lewis Swift. Inventor Thomas Edison was also on hand, stationed at Rawlins, Wyoming hoping to test his new-fangled invention known as a tasimeter to measure the heat of the solar corona.

Conditions were austere, to say the least. Although the teams endured dust storms that nearly threatened to cut their expeditions short, the morning of the 29^th dawned, as one newspaper reported, “as slick and clean as a Cheyenne free-lunch table.” Totality began just after 4 PM local, as observers near the tiny town of Separation, Wyoming swung their instruments into action.

Such a quest is difficult under the best of circumstances. Observers had to sweep the area within 3 degrees of the Sun (six times the diameter of a Full Moon) quickly during the fleeting moments of totality with their narrow field refractors, looking for a +4^thmagnitude star or fainter among the established star fields.

Map of the path of the total solar eclipse of July 29th, 1878. (Credit: Fred Espenak/NASA/GSFC).

In the end, the expedition was both a success and a failure. Watson & Swift both claimed to have identified a +5^th magnitude object similar in brightness to the nearby star Theta Cancri. Astronomer Christian Heinrich Friedrich Peters later cast doubt on the sighting and the whole Vulcan affair, claiming that “I refuse to go on a wild goose chase after Le Verrier’s mythical birds!”

And speaking of birds, Edison ran into another eclipse phenomenon while testing his device, when chickens, fooled by the approaching false dusk came home to roost at the onset of totality!

Vulcan search map for the Smithsonian Obervatory's 1900 eclipse expedition. (From the collection of Michael Zeiler @EclipseMaps, used with permission). — Vulcan search map for the Smithsonian Observatory’s 1900 eclipse expedition. (From the collection of Michael Zeiler @EclipseMaps, used with permission).

But such is the life of an eclipse-chaser. Albert Einstein’s general theory of relativity explained the precession of Mercury’s orbit in 1916 and did away with a need for Vulcan entirely.

But is the idea of intra-Mercurial worldlets down for the count?

The search strategy for NASA's high-altitude mission to hunt for Vulcanoids in 2002. (Credit: NASA/Dryden). — The search strategy for NASA’s high-altitude mission to hunt for Vulcanoids in 2002. (Credit: NASA/Dryden).

Amazingly, the quest for objects inside Mercury’s orbit goes on today, and the jury is still out. Dubbed Vulcanoids, modern day hunters still probe the inner solar system for tiny asteroids that may inhabit the region close to the Sun. In 2002, NASA conducted a series of high altitude flights out of the Dryden Flight Research Center at Edwards Air Force Base, California, sweeping the sky near the Sun for Vulcanoids at dawn and dusk. Now, there’s a job to be envious of — an F-18 flying astronomer!

One of NASA's fleet of high-performance F-18 aircraft. (Credit: NASA). — One of NASA’s fleet of high-performance F-18 aircraft. (Credit: NASA).

NASA’s MESSENGER spacecraft was also on the lookout for Vulcanoids on its six year trek through the inner solar system prior to orbital insertion on March 18^th, 2011.

Thus far, these hunts have turned up naught. But one of the most fascinating quests is still ongoing and being carried out by veteran eclipse-chaser Landon Curt Noll.

Mr. Noll last conducted a sweep for Vulcanoids during total phases of the long duration total solar eclipse of July 22^nd, 2009 across the Far East. He uses a deep sky imaging system, taking pictures in the near-IR to accomplish this search. Using this near-IR imaging technique during a total solar eclipse requires a stable platform, and thus performing this feat at sea or via an airborne platform is out. Such a rig has been successful in catching the extremely thin crescent Moon at the moment it reaches New phase.

Mr. Noll explains the aspects of an eclipse during a 2006 expedition to Libya. (Coutesy of Landon Curt Noll, used with permission).

To date, no convincing Vulcanoid candidates have been found. Mr. Noll also notes that the European Space Agency/NASA’s joint Solar Heliospheric Observatory (SOHO) spacecraft has, for all intents and purposes, eliminated the possibility of Vulcanoids brighter than +8^th magnitude near the Sun. Modern searches during eclipses conducted in this fashion scan the sky between wavelengths of 780 to 1100 nanometres down to magnitude +13.5. Mr. Noll told Universe Today that “Our improved orbital models show that objects as small as 50m in diameter could reside in a zone 0.08 A.U. to 0.18 AU (1.2 to 2.7 million kilometers) from the Sun.” He also stated that, “there is plenty of ‘room’ for (Vulcanoids) in the 50 metre to 20 kilometre range.”

Vulcanoid search diagram — The modern day Vulcanoid search strategy. (Diagram courtesy of Landon Curt Noll, used with permission).

Mr. Noll plans to resume his hunt during the August 21^st, 2017 total solar eclipse spanning the continental United States. Totality for this eclipse will have a maximum duration of 2 minutes and 40 seconds. Circumstances during the next solar eclipse (a hybrid annular-total crossing central Africa on November 3^rd, 2013) will be much more difficult, with a max totality located out to sea of only 1 minute and 40 seconds.

Libyan 2 — Mr. Noll talks with a local reporter during the 2006 total solar eclipse expedition to Libya. (Photograph courtesy of Landon Curt Noll, used with permission).

Still, we think it’s amazing that the quest for Vulcan (or at least Vulcanoids) is alive and well and being spearheaded by adventurous and innovative amateur astronomers. In the words of Vulcan’s native fictional son, may it “Live Long & Prosper!”

– For a fascinating read on the subject, check out In Search for planet Vulcan.

– Read more of Mr. Noll’s fascinating search for Vulcanoids here.

July 28, 2013December 23, 2015 by Ken Kremer

Opportunity rover Days Away from Mars Mountain Quest

Opportunity rover’s view from very near the foothills of Solander Point looking along the rim and vast expanse of Endeavour Crater. Solander Point is the 1st Martian Mountain NASA’s Opportunity will climb and the rovers next destination. Solander Point may harbor clay minerals indicative of a past Martian habitable environment. This navcam mosaic was assembled from raw images taken on Sol 3374 (July 21, 2013). Credit: NASA/JPL/Cornell/Marco Di Lorenzo/Ken Kremer (kenkremer.com) See complete panoramic mosaic below

Opportunity rover’s view from very near the foothills of Solander Point looking along the rim and vast expanse of Endeavour Crater. This area exhibits gypsum signatures and numerous blocks of intriguing rock. Solander Point is the 1st Martian Mountain NASA’s Opportunity will climb and the rovers next destination. Solander Point may harbor clay minerals indicative of a past Martian habitable environment. This navcam mosaic was assembled from raw images taken on Sol 3374 (July 21, 2013). Credit: NASA/JPL/Cornell/Marco Di Lorenzo/Ken Kremer (kenkremer.com).
See complete panoramic mosaic below. Story updated with further details[/caption]

Exactly a decade after blasting off for the Red Planet and discovering a wide swath of water altered rocks and minerals in the ensuing years by exploring countless craters large and small, NASA’s intrepid Opportunity rover is just days away from arriving at her next big quest – a Martian mountain named Solander Point that may possess the key chemical ingredients necessary to sustain Martian life forms.

“We are parked 200 meters away from the bench at Solander Point,” Ray Arvidson told Universe Today exclusively. Arvidson is the mission’s deputy principal scientific investigator from Washington University in St. Louis, Mo. Furthermore, this area exhibits signatures related to water flow.

Solander Point also represents ‘something completely different’ – the first mountain the intrepid robot will ever climb.

“This will be Opportunity’s first mountain and the view from the ridge crest should be spectacular,” wrote Larry Crumpler, a science team member from the New Mexico Museum of Natural History & Science, in his latest field report about the 10 years ongoing Mars Exploration Rover (MER) mission.

Indeed the rover is now just a few short drives southward from making landfall on the northern tip of the point in her current trek across the relatively flat plains around the rim of Endeavour crater.

“We are now only about 180 meters from the new mountain, Solander Point.”

Opportunity rover location in the latest MRO/HiRISE color image. The green line shows more or less the route we hope to take to the base of Solander point. Since it is only a couple of hundred meters away, we could be there is a couple of drives. Maybe by the end of next week. The label say "3374" but this is also roughly the location through 3379. — Opportunity rover location in the latest MRO/HiRISE color image. The green line shows more or less the route we hope to take to the base of Solander point. Since it is only a couple of hundred meters away, the rover could be there is a couple of drives. Maybe by the end of next week. The label say “3374” but this is also roughly the location through 3379. NASA/JPL/Larry Crumpler

But before moving onward, Arvidson explained that the rover will briefly pause here “at dark terrain” for some exciting science due to water related spectral observations from the CRISM instrument captured by NASA’s Mars Reconnaissance Orbiter (MRO) circling overhead.

“CRISM data [from Mars orbit] shows a relatively deep 1.9 micrometer absorption feature due to H2O-bearing minerals,” said Arvidson.

This past spring, Opportunity made the historic discovery of clay minerals and a habitable environment on a low hill called Cape York at the rover’s prior stop along the rim of Endeavour crater.

Solander was selected as the robot’s next destination because it simultaneously offers a goldmine of science as well as north facing slopes – where Opportunity’s solar wings can more effectively soak up the sun’s rays to generate life giving electrical power during the next Martian winter.

But since Opportunity is currently generating plenty of power from her solar arrays and arriving with a bonus cushion of time before the looming onset of her 6th Martian winter, the team decided to take a small detour to the southeast and spend several sols (or Martian days) exploring an area of intriguing geology of outcrops, gypsum signatures and more on the bench surrounding the base of the mountain.

“We slowed down this week so that we could check out the rocks here where there is a strange hydration signature from orbital remote sensing,” says Crumpler.

“This is also an area that appears to have more large blocks in the HiRISE images [from Mars orbit], so we are checking out one of the blocks, “Black Shoulder”.

“We are hoping that the rocks on the ridge crest will be spectacular too,” notes Crumpler.

Opportunity rover’s view very near the foothills of Solander Point along the rim and vast expanse of Endeavour Crater. Solander Point is the 1st Martian Mountain NASA’s Opportunity will climb and the rovers next destination. Solander Point may harbor clay minerals indicative of a past Martian habitable environment. This navcam panoramic mosaic was assembled from raw images taken on Sol 3374 (July 21, 2013). Credit: NASA/JPL/Cornell/Marco Di Lorenzo/Ken Kremer (kenkremer.com) — Opportunity rover’s view very near the foothills of Solander Point along the rim and vast expanse of Endeavour Crater. This area exhibits gypsum signatures and numerous blocks of intriguing rock. Solander Point is the 1st Martian Mountain NASA’s Opportunity will climb and the rovers next destination. Solander Point may harbor clay minerals indicative of a past Martian habitable environment. This navcam panoramic mosaic was assembled from raw images taken on Sol 3374 (July 21, 2013). Credit: NASA/JPL/Cornell/Marco Di Lorenzo/Ken Kremer (kenkremer.com)

Opportunity is using the science instruments on her 3 foot ( 1 meter) long robotic arm to conduct brief in-situ investigations of “Black Shoulder” with the Microscopic Imager (MI) and the Alpha Particle X-ray Spectrometer (APXS).

And …. it’s ‘Mountains Galore’ from here on out for the remainder of Opportunity’s Magnificent Mission to Mars.

Why? Because Opportunity is nearing the foothills of a long chain of eroded segments of the crater wall of Endeavour crater which spans a humongous 14 miles (22 kilometers) wide.

Solander Point may harbor deposits of phyllosilicate clay minerals – which form in neutral pH water – in a thick layer of rock stacks indicative of a past Martian habitable zone.

The rover team is discussing the best way to approach and drive up Solander.

“One idea is to drive part way up Solander from the west side of the rim, turn left and then drive down the steeper north facing slopes with the stratographic sections,” Ray Arvidson explained to Universe Today.

“That way we don’t have to drive up the relatively steeper slopes.”

“The rover can drive up rocky surfaces inclined about 12 to 15 degrees.”

“We want to go through the stratographic sections on the north facing sections,” Arvidson told me.

Opportunity rover moves closer to the foothills of Solander Point along the rim and vast expanse of Endeavour Crater. The rover investigated one of the large rocks here with her microscopic imager and X-Ray spectrometer. Soon she will start climbing up Solander - her 1st Martian Mountain ascent. This navcam panoramic mosaic was assembled from raw images taken on Sol 3376 (July 23, 2013). Credit: NASA/JPL/Cornell/Marco Di Lorenzo/Ken Kremer (kenkremer.com) — Opportunity rover moves closer to the foothills of Solander Point along the rim and vast expanse of Endeavour Crater. The rover investigated one of the large rocks near here with her microscopic imager and X-Ray spectrometer. Soon she will start climbing up Solander – her 1st Martian Mountain ascent. This navcam panoramic mosaic was assembled from raw images taken on Sol 3376 (July 23, 2013).
Credit: NASA/JPL/Cornell/Marco Di Lorenzo/Ken Kremer (kenkremer.com)

Today (July 28) is Sol 3380 for a mission that was only warrantied to last 90 Sols!

Opportunity’s total driving distance exceeds 23.6 miles (37.9 kilometers). She has snapped over 182,000 images.

The "work volume". This view from the front hazcams shows the rock target that is being checked out before the final slog to the south. With luck, by the end of next week we will be plinking around the base of yonder mountain. "Plinking" is a geological term for wandering around with your hammer trying to get a handle on the local outcrops before plunging ahead with mapping and asking the rocks serious questions. Credit: NASA/JPL/Larry Crumpler — The “work volume”. This view from the front hazcams shows the rock target that is being checked out before the final slog to the south. With luck, by the end of next week we will be plinking around the base of yonder mountain. “Plinking” is a geological term for wandering around with your hammer trying to get a handle on the local outcrops before plunging ahead with mapping and asking the rocks serious questions. Credit: NASA/JPL/Larry Crumpler

Meanwhile on the opposite side of Mars at Gale Crater, Opportunity’s younger sister rover Curiosity also discovered a habitable environment originating from a time when the Red Planet was far warmer and wetter billions of years ago.

And like Opportunity, Curiosity is also trekking towards a mountain rich in sedimentary layers hoping to unveil the mysteries of Mars past. But Curiosity likely won’t arrive at 3.4 mile (5.5 km) high Mount Sharp for another year.

Ken Kremer

Traverse Map for NASA’s Opportunity rover from 2004 to 2013. This map shows the entire path the rover has driven during more than 9 years and over 3374 Sols, or Martian days, since landing inside Eagle Crater on Jan 24, 2004 to current location near foothills of Solander Point at the western rim of Endeavour Crater. Credit: NASA/JPL/Cornell/ASU/Marco Di Lorenzo/Ken Kremer — Traverse Map for NASA’s Opportunity rover from 2004 to 2013
This map shows the entire path the rover has driven during more than 9 years and over 3374 Sols, or Martian days, since landing inside Eagle Crater on Jan 24, 2004 to current location near foothills of Solander Point at the western rim of Endeavour Crater. Opportunity discovered clay minerals at Esperance – indicative of a habitable zone. Credit: NASA/JPL/Cornell/ASU/Marco Di Lorenzo/Ken Kremer

…………….
Learn more about Mars, Curiosity, Opportunity, LADEE, MAVEN, Antares and more at Ken’s upcoming lecture presentations

Aug 12: “RockSat-X Suborbital Launch, LADEE Lunar & Antares Rocket Launches from Virginia”; Rodeway Inn, Chincoteague, VA, 8 PM

July 24, 2013December 23, 2015 by Ken Kremer

Curiosity Sets Record Pace for Longest Drive Yet on Mars

The scene taken on Sol 340 was taken shortly after Curiosity finished her longest yet. The 329.1-foot (100.3-meter) drive was twice as long as any previous sol's drive by Curiosity. The view is toward the south, including a portion of Mount Sharp and a band of dark dunes in front of the mountain. The Mars Hand Lens Imager (MAHLI) camera on NASA's Curiosity rover is carried at an angle when the rover's arm is stowed for driving. Still, the camera is able to record views of the terrain Curiosity is crossing in Gale Crater, and rotating the image 150 degrees provides this right-side-up scene. Credit: NASA/JPL-Caltech/MSSS

This scene was taken on Sol 340 shortly after Curiosity finished her longest drive yet
The 329.1-foot (100.3-meter) drive was twice as long as any previous sol’s drive by Curiosity. The view is toward the south, including a portion of Mount Sharp and a band of dark dunes in front of the mountain. The Mars Hand Lens Imager (MAHLI) camera on NASA’s Curiosity rover is carried at an angle when the rover’s arm is stowed for driving. Still, the camera is able to record views of the terrain Curiosity is crossing in Gale Crater, and rotating the image 150 degrees provides this right-side-up scene. Credit: NASA/JPL-Caltech/MSSS
See updated Traverse Map below[/caption]

NASA’s car-sized Curiosity rover is now blazing across the Red Planet’s surface and moving at a record setting pace towards a towering Martian mountain loaded with mineral caches that could potentially support a habitable environment.

On Sunday, July 21 (or Sol 340), Curiosity drove the length of a football field – 109.7 yards (100.3 meters) – a span that’s twice as far as she had ever driven before since the dramatic touch down on Mars nearly a year ago.

The previous record for a one-day drive was about half a football field – 54 yards (49 meters) – and achieved on Sol 50 (Sept. 26, 2012), roughly seven weeks after the pulse pounding landing inside Gale Crater on Aug. 6, 2012.

The 6 wheeled robot was able to move so far because on the prior drive she wound up atop a rise offering an uncommonly good view of the surrounding landscape and the road ahead across the crater floor towards Mount Sharp – the ultimate driving goal.

“What enabled us to drive so far on Sol 340 was starting at a high point and also having Mastcam images giving us the size of rocks so we could be sure they were not hazards,” said rover planner Paolo Bellutta of NASA’s Jet Propulsion Laboratory, Pasadena, Calif, in a NASA statement.

“We could see for quite a distance, but there was an area straight ahead that was not clearly visible, so we had to find a path around that area.”

Following another lengthy drive of 68.2 yards (62.4 meters) on Wednesday, July 23 (Sol 342), the mission’s total driving distance so far stands at 0.81 mile (1.23 kilometers).

Mount Sharp lies about 5 miles (8 kilometers) distant – as the Martian crow flies.

On July 4, Curiosity embarked on the epic trek to Mount Sharp after completing more than seven months of science investigations and historic interplanetary drilling and sample analysis at an area known as Glenelg and Yellowknife Bay. There she discovered a habitable environment with the chemical ingredients that could sustain Martian microbes- thereby already accomplishing the primary goal of NASA’s flagship mission to Mars.

A combination of increased experience by the engineers directing the mega rover as well as intermediate software upgrades also play key roles in speeding Curiosity towards 3.4 mile (5.5 km) high Mount Sharp.

A huge leap in roving across Mars is in the works soon using new driving software called autonomous navigation, or autonav, that will hasten the overland journey.

“We have put some new software – called autonav, or autonomous navigation – on the vehicle right after the conjunction period back in March 2013,” said Jim Erickson, Curiosity Project Manager, in exclusive interview with Universe Today. Erickson is from NASA’s Jet Propulsion Laboratory (JPL) in Pasadena, Calif.

“This will increase our ability to drive.”

Curiosity's Traverse Map Through Sol 342. This map shows the route driven by NASA's Mars rover Curiosity through the 342 Martian day, or sol, of the rover's mission on Mars (July 21, 2013). Numbering of the dots along the line indicate the sol number of each drive. North is up. The scale bar is 200 meters (656 feet). From Sol 340 to Sol 342, Curiosity had driven a straight line distance of about 191.9 feet (58.49 meters). The base image from the map is from the High Resolution Imaging Science Experiment Camera (HiRISE) in NASA's Mars Reconnaissance Orbiter. Image Credit: NASA/JPL-Caltech/Univ. of Arizona — Curiosity’s Traverse Map Through Sol 342
This map shows the route driven by NASA’s Mars rover Curiosity through the 342 Martian day, or sol, of the rover’s mission on Mars (July 21, 2013). Numbering of the dots along the line indicate the sol number of each drive. North is up. The scale bar is 200 meters (656 feet). From Sol 340 to Sol 342, Curiosity had driven a straight line distance of about 191.9 feet (58.49 meters). The base image from the map is from the High Resolution Imaging Science Experiment Camera (HiRISE) in NASA’s Mars Reconnaissance Orbiter.
Image Credit: NASA/JPL-Caltech/Univ. of Arizona

Implementing the new driving software will make Curiosity smarter as well as more capable, productive and independent than ever before.

“With autonav the rover will have the ability to understand how far it’s driving, whether its slipping or not, and it improves safety,” Erickson told me.

The rover’s route is on a southwestward heading towards the ancient sedimentary layers at the foothills of the mountain in the middle of Gale Crater.

In addition to setting new driving records, the 1 ton rover is also driving more frequently and on repeated days too.

When everything synchs up, Curiosity can drive two or more days in row.

“We can drive two days in a row now if the timing is right. If we get the results of the day’s drive (n) in time before we have to plan the next day’s drive (n+1) – almost as if you’re on Mars time. Then that would work fine,” Erickson explained.

“Also, when we get the autonav capability we can plan two days in row. One day of directed driving and the second day can be ‘OK here’s your target from wherever you end up, try and go to this spot’.”

“This will increase the productivity!”

Erickson says the team is testing autonav now and should it be up and running within weeks, or sooner.

Read Part 1 & Part 2 of my interview with Jim Erickson for further details.

This photomosic shows NASA’s Curiosity departing at last for Mount Sharp- her main science destination. Note the wheel tracks on the Red Planet’s surface. The navcam camera images were taken on July 4, 2013 (Sol 324). Credit: NASA/JPL-Caltech/Ken Kremer (kenkremer.com)/Marco Di Lorenzo

Meanwhile Curiosity’s older sister rover Opportunity is making fast tracks towards her own mountain goal and should arrive at the base of Solander Point rather soon in August.

Solander Point is a segment of the eroded rim of huge Endeavour crater and may also possess key ingredients essential to support an environment favorable for possible Martian microbes.

And it’s worth noting that older sis Opportunity stills holds the 1 day Martian distance driving world record of 219.89 meters – established more than 8 years ago on Sol 410 (March 20, 2005)!!

Stay tuned for more on NASA’s sojourning pair of Martian robots.

Ken Kremer

July 24, 2013December 23, 2015 by Jason Major

Could Cassini See You On “The Day The Earth Smiled?”

The face of Earth aimed toward Cassini during imaging on July 19, 2013

So along with the rest of the world, you smiled. You waved. You went outside on July 19, wherever you were, and looked upwards and out into the solar system knowing that our robotic representative Cassini would be capturing a few pixels’ worth of photons bouncing off our planet when they eventually reached Saturn, 900 million miles away. But did Cassini actually capture any photons coming from where you were? The image above will tell you.

Assembled by the Planetary Habitability Laboratory at the University of Puerto Rico at Arecibo (where the enormous 305-meter radio telescope is located) this image shows what side of Earth was facing Cassini when its “pale blue dot” images were obtained, at approximately 22:47 UTC (Cassini time.)

Didn’t make it into Cassini’s photo? That’s ok… maybe MESSENGER had already caught you earlier that very same day:

The view of Earth seen by MESSENGER from Mercury on July 19, 2013

Before Cassini took its images — several hours before, in fact — the MESSENGER spacecraft was holding some photo shoots of its own from 61 million miles in the other direction!

The image above shows the side of Earth that was facing Mercury on the morning of July 19, 2013, when MESSENGER was acquiring images in our direction during a hunt for any possible satellites of the innermost planet.

Earth was as bright (-4.8 magnitude) as the maximum brightness of Venus at the moment the image was taken from Mercury.

Of course, in both series of images specific details of our planet can’t be made out — Earth was barely more than a pixel in size (regardless of any bloom caused by apparent brightness.) Clouds, countries, continents, oceans… the entire population of our world, reduced to a single point of light — a “mote of dust suspended in a sunbeam.”

For both portrayals, high-resolution black and white images from the GOES East and Meteosat meteorological satellites were combined with color information from NASA Visible Earth to generate true-color images of our planet as it would have looked to each respective imaging spacecraft… if they had the impossibly-precise optics to resolve Earth from such distances, of course.

But it’s ok that they don’t… we can still use our imaginations.

Earth from the geostationary weather satellite GOES East on July 19, 2013 at 5 PM EST. This is approximately the view that Cassini would have had of Earth during imaging.

Image credits: PHL @ UPR Arecibo, NASA/Johns Hopkins University Applied Physics Laboratory/Carnegie Institution of Washington, NERC Satellite Station, Dundee University, Scotland. Thanks to Prof. Abel Méndez (PHL/UCR) for the heads-up on these.

July 23, 2013December 23, 2015 by Ken Kremer

Sneak Peeks of the Earth and Saturn Panorama from Cassini on July 19

The Day the Earth Smiled: Sneak Preview
In this rare image taken on July 19, 2013, the wide-angle camera on NASA’s Cassini spacecraft has captured Saturn’s rings and our planet Earth and its moon in the same frame. Image Credit: NASA/JPL-Caltech/Space Science Institute
See below our wider context mosaic of the Earth, Saturn and its majestic rings[/caption]

Breathtaking raw images of the Earth and Saturn system snapped by NASA’s Cassini spacecraft on July 19 during the worldwide ‘Wave at Saturn’ campaign are streaming back across 1 billion miles of interplanetary space.

Science team members are now busily processing the images to create individual color composites and a panoramic view of the ‘pale blue dot’ and the entire Saturnian system.

NASA just released the first individual color composite focusing on Earth – see above. And its spectacular!

See below our preliminary mosaic showing the Earth in context with nearly half of Saturn and floating in between its incomparably majestic rings.

Partial context mosaic of the Earth and Saturn taken by NASA’s Cassini orbiter on July 19, 2013. This mosaic was assembled from five wide angle camera raw images. Credit: NASA/JPL-Caltech/Ken Kremer/Marco Di Lorenzo — Partial context mosaic of the Earth and Saturn taken by NASA’s Cassini orbiter on July 19, 2013. This mosaic was assembled from five wide angle camera raw images and offers a sneak peek of the complete panorama. Credit: NASA/JPL-Caltech/Ken Kremer/Marco Di Lorenzo

To capture all of Saturn and its wide swath of rings, Cassini’s wide angle camera snapped a mosaic of 33 footprints.

“At each footprint, images were taken in different spectral filters for a total of 323 images,” says Carolyn Porco, Cassini Imaging Team leader of the Space Science Institute in Boulder, Colo.

Cassini took the pictures of Earth between 2:27 and 2:42 p.m. PDT on Friday, July 19 from a distance of about 898 million miles (1.44 billion kilometers) away from the home to every human being that has ever lived.

The images show the Earth and the Moon as dots barely about a pixel wide but do reveal the ‘pale blue dot’ that is home to all of humanity and our whitish colored neighbor.

Coincidentally, the first humans (Neil Armstrong and Buzz Aldrin) set foot on the Moon 44 years ago nearly to the day of Cassini’s new images on July 20, 1969.

Distant views of the Earth from our robotic explorers, especially from the outer reaches of our Solar System, are few and far between, and are therefore events for space and astronomy enthusiasts and everyone else to savor.

“One of the most exciting Cassini events in 2013 will be the unusual opportunity on July 19 to image the whole Saturn system as it is backlit by the sun,” explained Linda Spilker, Cassini project scientist of NASA’s Jet Propulsion Laboratory, Pasadena, Calif.

“With Saturn covering the harsh light of the sun, we will be gathering unique ring science and also catching a glimpse of our very own home planet.”

Cassini previously took an absolutely fabulous mosaic of Saturn and Earth back in 2006 that stands as one of the landmark images of the space age.

Besides being picturesque, such mosaics also serve science. For example, the 2006 image “revealed that the dusty E ring, which is fed by the water-ice plume of the moon Enceladus, had unexpectedly large variations in brightness and color around its orbit,” says Spilker.

“We’ll want to see how that looks seven Earth years and a Saturnian season later, giving us clues to the forces at work in the Saturn system. We’ll do this analysis by collecting data from our visual and infrared mapping spectrometer, composite infrared mapping spectrometer and ultraviolet imaging spectrograph in addition to the imaging cameras.”

This simulated view from NASA's Cassini spacecraft shows the expected positions of Saturn and Earth on July 19, 2013, around the time Cassini will take Earth's picture. Cassini will be about 898 million miles (1.44 billion kilometers) away from Earth at the time. That distance is nearly 10 times the distance from the sun to Earth. Image credit: NASA/JPL-Caltech — This simulated view from NASA’s Cassini spacecraft shows the expected positions of Saturn and Earth on July 19, 2013, around the time Cassini will take Earth’s picture. Cassini will be about 898 million miles (1.44 billion kilometers) away from Earth at the time. That distance is nearly 10 times the distance from the sun to Earth. Image credit: NASA/JPL-Caltech

“July 19 marked the first time people on Earth had advance notice their planet’s portrait was being taken from interplanetary distances,” says NASA.

I waved fondly at Saturn and hope you had the chance to wave at Saturn from all across the globe. NASA reports that nearly 20,000 participated in organized events. Countless others waved too.

Cassini was launched in 1997 and achieved orbit at Saturn in 2004. The mission is scheduled to continue until 2017 when it will commit a suicide death dive into the gas giant.

“We can’t see individual continents or people in this portrait of Earth, but this pale blue dot is a succinct summary of who we were on July 19,” said Spilker in a NASA statement.

“Cassini’s picture reminds us how tiny our home planet is in the vastness of space, and also testifies to the ingenuity of the citizens of this tiny planet to send a robotic spacecraft so far away from home to study Saturn and take a look-back photo of Earth.”

Ken Kremer

JPL Waves at Saturn As NASA's Cassini spacecraft turned its imaging cameras to Earth, scientists, engineers and visitors at NASA's Jet Propulsion Laboratory, Pasadena, Calif., gathered to wave at our robotic photographer in the Saturn system on July 19, 2013. Credit: NASA/JPL-Caltech — JPL Waves at Saturn
As NASA’s Cassini spacecraft turned its imaging cameras to Earth, scientists, engineers and visitors at NASA’s Jet Propulsion Laboratory, Pasadena, Calif., gathered to wave at our robotic photographer in the Saturn system on July 19, 2013. Credit: NASA/JPL-Caltech

July 21, 2013December 23, 2015 by Jason Major

What the Earth and Moon Look Like From Saturn

Earth and Moon imaged from Cassini on July 19, 2013

Did you smile and wave at Saturn on Friday? If you did (and even if you didn’t) here’s how you — and everyone else on Earth — looked to the Cassini spacecraft, 898.4 million miles away.

Hope you didn’t blink!

The image above is a color-composite made from raw images acquired by Cassini in red, green, and blue visible light wavelengths. Some of the specks around the edges are background stars, and others are the result of high-energy particle noise, of which some have been digitally removed.

The Moon is the bright dot just below and to the left of Earth. (An original raw image can be seen here.)

UPDATE 7/22: See the *official* NASA images here.

Cassini acquired the images while capturing views of Saturn in eclipse against the Sun between 22:24:00 UTC on July 19 and 02:43:00 UTC on July 20 (6:24 to 10:43 pm EDT July 19.) On Cassini time, the Earth imaging took place between 22:47:13 UTC (6:47:13 pm EDT) and 23:01:56 UTC (7:01:56 pm EDT) on the 19th.

Full mosaic arrangement acquired by Cassini on July 19-20 UTC. (NASA/JPL-Caltech/SSI) — Full mosaic arrangement acquired by Cassini on July 19-20 UTC. Earth was positioned just below the planet. (NASA/JPL-Caltech/SSI)

The world was invited to “Wave at Saturn” beginning 5:27 pm EDT on Friday — which allowed enough time for the photons from a waving world to actually reach Cassini’s camera just beyond Saturn, 1.44 billion kilometers away. (Did you wave? I did!) It was the first time Earth’s population was made aware beforehand that their picture would be taken from such a cosmic distance.

A crowd gathered on the mall at NASA's Jet Propulsion Laboratory in Pasadena to wave at Saturn on July 19 (NASA/JPL-Caltech) — A crowd gathered on the mall at NASA’s Jet Propulsion Laboratory in Pasadena to wave at Saturn on July 19 (NASA/JPL-Caltech)

The image of our planet and moon, seen as merely a couple of bright points of light against the blackness of space, recalls Sagan’s poignant “pale blue dot” passage from Cosmos…

“From this distant vantage point, the Earth might not seem of any particular interest. But for us, it’s different. Consider again that dot. That’s here, that’s home, that’s us. On it everyone you love, everyone you know, everyone you ever heard of, every human being who ever was, lived out their lives. The aggregate of our joy and suffering, thousands of confident religions, ideologies, and economic doctrines, every hunter and forager, every hero and coward, every creator and destroyer of civilization, every king and peasant, every young couple in love, every mother and father, hopeful child, inventor and explorer, every teacher of morals, every corrupt politician, every “superstar,” every “supreme leader,” every saint and sinner in the history of our species lived there – on a mote of dust suspended in a sunbeam.

The “pale blue dot” of Earth captured by Voyager 1 in Feb. 1990 (NASA/JPL)

The Earth is a very small stage in a vast cosmic arena. Think of the rivers of blood spilled by all those generals and emperors so that, in glory and triumph, they could become the momentary masters of a fraction of a dot. Think of the endless cruelties visited by the inhabitants of one corner of this pixel on the scarcely distinguishable inhabitants of some other corner, how frequent their misunderstandings, how eager they are to kill one another, how fervent their hatreds.

Our posturings, our imagined self-importance, the delusion that we have some privileged position in the universe, are challenged by this point of pale light. Our planet is a lonely speck in the great enveloping cosmic dark. In our obscurity, in all this vastness, there is no hint that help will come from elsewhere to save us from ourselves.

The Earth is the only world known so far to harbor life. There is nowhere else, at least in the near future, to which our species could migrate. Visit, yes. Settle, not yet. Like it or not, for the moment the Earth is where we make our stand.

It has been said that astronomy is a humbling and character-building experience. There is perhaps no better demonstration of the folly of human conceits than this distant image of our tiny world. To me, it underscores our responsibility to deal more kindly with one another, and to preserve and cherish the pale blue dot, the only home we’ve ever known.”

— Carl Sagan (1934–1996)

A full mosaic of Cassini’s imaging of Saturn silhouetted against the Sun is expected in the coming weeks.

UPDATE: Here’s another RGB color composite, made from raw images acquired with Cassini’s wide-angle camera. It shows a view of Saturn and the rings in eclipse as seen from below and behind, backlit by the Sun. Earth is the bright point light near the center. (See original here.)

fdslkfhkdshklfa — Raw image (RGB composite) of Saturn in eclipse with Earth in the distance — just a pale blue dot. (NASA/JPL-Caltech/SSI. Composite by J. Major.)

Images: NASA/JPL-Caltech/Space Science Institute. Composites by Jason Major.

July 21, 2013December 23, 2015 by Ken Kremer

Curiosity Interview with Project Manager Jim Erickson-Part 2-Dealing with Dunes and Comet ISON on the Road to Mt. Sharp

Curiosity On the Road to Mount Sharp and treacherous Sand Dunes – Sol 338 – July 19
Curiosity captured this panoramic view of the path ahead to the base of Mount Sharp and potentially dangerous sand dunes after her most recent drive on July 19, 2013. She must safely cross over the dark dune field to climb and reach the lower sedimentary layers of Mount Sharp. Stowed robotic arm on rover deck seen at center.
See JPL traverse map below pinpointing the view from this location
Credit: NASA/JPL-Caltech/Ken Kremer-(kenkremer.com)/Marco Di Lorenzo[/caption]

NASA’s state-of-the-art Curiosity Mars rover is stepping up the driving pace and rolling relentlessly across alien Martian terrain towards the towering mystery mountain known as Mount Sharp that’s holds the keys to the Red Planets past evolution and whether its an abode for Life.

To uncover the latest scoop on the robots otherworldly adventures, Universe Today conducted an exclusive interview with the Curiosity Project Manager Jim Erickson, of NASA’s Jet Propulsion Laboratory (JPL).

In Part 2 of my conversation with Jim Erickson we’ll discuss more about the rover’s traverse across alien territory that’s simultaneously a science gold mine and a potential death trap, as well as Comet ISON and nighttime observations and science planning.

Read Part 1 – here.

“When Comet ISON is in the sky I’m sure we’ll do some observations of it depending on when its visible,” Erickson told me.

Today, July 20, is Sol 339 of the rovers mission to Mars. And also the 44th anniversary of the 1st human Moonwalks in 1969.

And Curiosity just drove another 34 meters yesterday, Sol 338 (July 19) – for a total distance exceeding 1.1 kilometers.

Curiosity's Traverse Map Through Sol 338 This map shows the route driven by NASA's Mars rover Curiosity through Sol 338 of the rover's mission on Mars (July 19, 2013). Numbering of the dots along the line indicate the sol number of each drive. North is up. The scale bar is 200 meters (656 feet). From Sol 337 to Sol 338, Curiosity had driven a straight line distance of about 122.90 feet (32.59 meters). The base image from the map is from the High Resolution Imaging Science Experiment Camera (HiRISE) in NASA's Mars Reconnaissance Orbiter. Image Credit: NASA/JPL-Caltech/Univ. of Arizona — Curiosity’s Traverse Map Through Sol 338
This map shows the route driven by NASA’s Mars rover Curiosity through Sol 338 of the rover’s mission on Mars (July 19, 2013). Numbering of the dots along the line indicate the sol number of each drive. North is up. The scale bar is 200 meters (656 feet). From Sol 337 to Sol 338, Curiosity had driven a straight line distance of about 122.90 feet (32.59 meters). The base image from the map is from the High Resolution Imaging Science Experiment Camera (HiRISE) in NASA’s Mars Reconnaissance Orbiter. Image Credit: NASA/JPL-Caltech/Univ. of Arizona

As for Martian sand dunes, they dunes offer both exciting opportunities and lurking dangers to the rovers well being.

Indeed fields of Martian sand dunes are potential death traps and the six wheeled rover has no choice but to traverse across an extensive dune field as she closes in on the base of Mount Sharp

Recall that NASA’s now long lived Opportunity rover nearly perished rather early in her mission at the ‘Purgatory’ dune field on Meridiani Planum.

Spirit died after more than six highly productive years on the Red Planet when she was unable to escape a hidden sand trap she had accidentally fallen wheels deep into as the vehicle was merrily roving beside an eroded volcano at Gusev Crater on the approach to the mysterious Von Braun mound.

So, dunes are serious business

Here is Part 2 of my interview with Jim Erickson.

Ken Kremer: Which direction is Curiosity headed? Will she be following the southwest route shown in the ellipse on the JPL map – see traverse map below – or reinvestigate any other spots nearer the landing site first?

Jim Erickson: We have a good general idea. We will be on a general heading of southwest, not west which would have taken us back near the landing site [at Bradbury Landing].

Ken: So the rover will not pass by the Hottah outcrop of concretions formed in water and investigated early in the mission?

Jim Erickson: No. The intent for the ellipse [shown on the map] is that we will be traveling in it to get to an area where the sand dunes look better for crossing [to the base of Mount Sharp]. When we get there we will know reality. And we will pick a safe spot to cross.

The dunes can be both an issue or in some cases easy sailing.

My experience on MER [Spirit & Opportunity] was that when you are going with the dunes, down a trough, they tend to be well packed and that was great driving.

But if you need to make a right turn, that can be a challenge for a couple of reasons. It is harder to see what is inside the next trough. And you have to drive to the top of the dune. So your driving is limited until you can see what’s inside the next dune.

Level ground is more straightforward. You know exactly what to look for if the terrain doesn’t change the next day. So you can do the same thing you did last night based on the new set of images.

If the terrain is changing then it gets more complicated.

Ken: Will you be straddling the dunes or driving alongside some safe distance away?

Jim Erickson: We have been going through various options of different planned routes. At some point we have to go with the dune directions.

So we’ll be traveling down some troughs later on. We will definitely have to pick our way through them.

Part of it is gaining experience in this new area of Mars with how the sand dunes and troughs themselves actually are.

So we’ll have to wait and see. We know we’ll have to deal with the dunes. Depending on how these dunes act we may have to do different things compared to MER.

Ken: What’s the health status of Curiosity?

Jim Erickson: We’re doing great. There are always active things we are looking at.

We had the anomaly before conjunction and have put in place a number of software mitigations and reconfigured the A side memory so that we can work around the hardware problem that happened. If we have another problem, both the A and B side memory can handle it gracefully, unlike the last time.

Ken: Describe the rover’s power situation? And the ability to do nighttime observations like the recent imagery of Phobos rising?

Read earlier Phobos story – here

Jim Erickson: Yes. We have plenty of power.

And certainly will be able to do nighttime observations.

Ken: What’s the plan for observations of Comet ISON?

Jim Erickson: When we get to the point when Comet ISON is in the sky I’m sure we’ll do some observations of it, depending on the time period when its visible.

Note: NASA’s Curiosity and Opportunity rovers will have a view of ISON in October with Oct. 1, 2013, being the comet’s closest approach to Mars.

NASA’s Directory of Planetary Science Jim Green told me previously that NASA is very interested in using its orbiting and surface assets at Mars to study Comet ISON. It’s a once in a lifetime opportunity.

Early October 2013 will be the prime viewing time for ISON from the vicinity of the Red Planet.

Let’s hope that NASA’s quartet of spacecraft and ESA’s lone orbiter capture some breathtaking imagery and science observations.

Ken: About the recent Phobos nighttime images, a Universe Today reader asked whether the other points of light beside Phobos were stars or hot pixels?

Jim Erickson: The specks are hot pixels [not stars], intensified by the long exposure times for the image.

Video Caption: ‘Phobos Rising’ – This movie clip shows Phobos, the larger of the two moons of Mars, passing overhead, as observed by Curiosity in a series of images centered straight overhead starting shortly after sunset on June 28, 2013. Phobos first appears near the lower center of the view and moves toward the top of the view. The apparent ring is an imaging artifact. The other bright spots are hot pixels – not stars. Credit: NASA/JPL-Caltech

Ken: How about the prospects for science along the way to the mountain?

Jim Erickson: We expect to do science along the way to Mount Sharp, for example in terms of atmospheric measurements.

We will stop at some preplanned sites. Exactly which ones is still being debated by the scientists.

And we’ll do the right thing – If we see something spectacular along the way. Just because we may not have identified it previously, that doesn’t mean we won’t stop and examine it.

Things are going very well, says Erickson.

Erickson has worked in key positions on many NASA planetary science missions dating back to Viking in the 1970’s. These include the Galileo mission to Jupiter, both MER rovers Spirit & Opportunity, as well as a stint with the Mars Reconnaissance Orbiter (MRO).

I’ll have more upcoming from Jim about Curiosity’s Martian drilling activities.

As of today (July 20) Curiosity has driven nine times since leaving the Glenelg/Yellowknife Bay area on July 4 (Sol 324), totaling nearly 300 meters.

Stay tuned for more from Mars.

Ken Kremer