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.)
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. 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)
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.)
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.
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. Credit: NASA/JPL-Caltech/Ken Kremer-(kenkremer.com)/Marco Di Lorenzo
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.
“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
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].
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
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?
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.
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 LorenzoMount Sharp inside Gale Crater – is the primary destination of NASA’s Curiosity rover mission to Mars. Curiosity landed on the right side of the mountain as shown here, near the dune field colored dark blue. Mount Sharp dominates Gale Crater. It is 3.4 mile (5.5 km) high. Gale Crater is 154 km wide. This image was taken by the High Resolution Stereo Camera (HRSC) of ESA’s Mars Express orbiter. Credit: ESA/DLR/FU Berlin (G. Neukum)
Painting of The Meteor of 1860 by Hudson River School artist Frederic Church. (Credit: Frederic Church courtesy of Judith Filenbaum Hernstadt).
“Year of meteors! Brooding year!”
-Walt Whitman
July 20th is a red letter date in space history. Apollo 11, the first crewed landing on the Moon, took place on this day in 1969. Viking 1 also made the first successful landing on Mars, seven years later to the day in 1976.
A remarkable astronomical event also occurred over the northeastern United States 153 years ago today on the night of July 20th, known as the Great Meteor Procession of 1860. And with it came a mystery of poetry, art and astronomy that was only recently solved in 2010.
A meteor procession occurs when an incoming meteor breaks up upon reentry into our atmosphere at an oblique angle. The result can be a spectacular display, leaving a brilliant glowing train in its wake. Unlike early morning meteors that are more frequent and run into the Earth head-on as it plows along in its orbit, evening meteors are rarer and have to approach the Earth from behind. In contrast, these often leave slow and stately trains as they move across the evening sky, struggling to keep up with the Earth.
The Great Meteor Procession of 1860 also became the key to unlock a 19th century puzzle as well. In 2010, researchers from Texas University San Marcos linked the event to the writings of one of the greatest American poets of the day.
Photograph of Walt Whitman taken by Mathew Brady circa 1860 (Library of Congress image in the Public Domain)..
Walt Whitman described a “strange, huge meteor-procession” in a poem entitled “Year of Meteors (1859-60)” published in his landmark work Leaves of Grass.
English professor Marilynn S. Olson and student Ava G. Pope teamed up with Texas state physics professors Russell Doescher & Donald Olsen to publish their findings in the July 2010 issue of Sky & Telescope.
As a seasoned observer, Whitman had touched on the astronomical in his writings before.
The event had previously been attributed over the years to the Great Leonid Storm of 1833, which a young Whitman would’ve witnessed as a teenager working in Brooklyn, New York as a printer’s apprentice.
Researchers noted, however, some problems with this assertion.
The stanza of contention reads;
Nor forget I sing of the wonder, the ship as she swam up my bay,
Well-shaped and stately, the Great Eastern swam up my bay, she was 600 feet long,
Her moving swiftly surrounded by myriads of small craft I forget not to sing;
Nor the comet that came unannounced out of the north flaring in heaven,
Nor the strange huge meteor-procession dazzling and clear shooting over our heads.
(A moment, a moment long, it sail’d its balls of earthly light over our heads,
Then departed, dropt in the night, and was gone.)
In the poem, the sage refers to the arrival of the Prince of Wales in New York City on October 1860. The election of Abraham Lincoln in November of that same year is also referred to earlier in the work. Whitman almost seems to be making a cosmic connection similar to Shakespeare’s along the lines of “When beggars die, no comets are seen…”
Path of the Meteor Procession of 1860 as depicted in the newspapers of the day. (From the collection of Don Olson).
The “comet that came unannounced” is easily identified as the Great Comet of 1860. Also referred to as Comet 1860 III, this comet was discovered on June 18th of that year and reached +1st magnitude that summer as it headed southward. The late 19th century was rife with “great comets,” and northern hemisphere observers could look forward to another great cometary showing on the very next year in 1861.
The Great Comet of 1861 as drawn by G. Williams on June 30th, 1861. (From Descriptive Astronomy by George Chambers, 1877)
There are some problems, however with the tenuous connection between the stanza and the Leonids.
The 1833 Leonids were one of the most phenomenal astronomical events ever witnessed, with estimates of thousands of meteors per second being seen up and down the U.S. Eastern Seaboard the morning of November 13th. Whitman himself described the event as producing;
“…myriads in all directions, some with long shining white trains, some falling over each other like falling water…”
Keep in mind, many startled townsfolk assumed their village was on fire on that terrifying morning in 1833, as Leonid bolides cast moving shadows into pre-dawn bedrooms. Churches filled up, as many thought that Judgment Day was nigh. The 1833 Leonids may have even played a factor in sparking many of the religious fundamentalist movements of the 1830s. We witnessed the 1998 Leonids from Kuwait, and can agree that this meteor shower can be a stunning sight at its peak.
But Whitman’s poem describes a singular event, a “meteor-procession” very different from a meteor shower.
Various sources have tried over the years to link the stanza to a return of the Leonids in 1858. A note from Whitman mentions a “meteor-shower, wondrous and dazzling (on the) 12th-13th, 11th month, year 58 of the States…” but keep in mind, “year 1” by this reckoning is 1776.
A lucky break came for researchers via the discovery of a painting by Frederic Church entitled “The Meteor of 1860.” This painting and several newspaper articles of the day, including an entry in the Harpers Weekly, collaborate a bright meteor procession seen across the northeastern U.S. from New York and Pennsylvania across to Wisconsin.
Such a bright meteor entered the atmosphere at a shallow angle, fragmented, and most likely skipped back out into space. Similar meteor processions have been observed over the years over the English Channel on August 18th, 1783 & across the U.S. Eastern Seaboard and Canada on February 9th, 1913.
On August 10th, 1972, a similar bright daylight fireball was recorded over the Grand Tetons in the western United States. Had the Great Meteor Procession of 1860 come in at a slightly sharper angle, it may have triggered a powerful airburst such as witnessed earlier this year over Chelyabinsk, Russia the day after Valentine’s Day.
The 1860 Meteor Procession is a great tale of art, astronomy, and mystery. Kudos to the team of researchers who sleuthed out this astronomical mystery… I wonder how many other unknown stories of historical astronomy are out there, waiting to be told?
Here’s our Weekly Space Hangout for July 19, 2013. Watch as a team of space and astronomy journalists discuss the big space stories of the week. We do this every Friday at 12:00 pm Pacific Time / 3:00 pm Eastern Time. You can join us live, or watch the archive here or on Google+.
Saturn V Moon Rocket F-1 Engine Thrust Chamber recovered from the floor of the Atlantic Ocean. Credit: Jeff Bezos Expeditions
In a fitting testament to NASA’s momentous Apollo Moon Landing Program, NASA and billionaire Jeff Bezos confirmed today (July 19) the discovery of a powerful F-1 first stage engine component from the Saturn V moon rocket that launched three American astronauts on the historic journey of Apollo 11 to land the first two humans on the Moon on July 20, 1969.
“On the eve of the 44th moonwalk anniversary, the Bezos Expedition confirms an Apollo 11 Saturn V F1 engine find,” NASA officially announced on its websites just moments ago today, July 19.
Apollo 11 commander and NASA astronaut Neil Armstrong, was immortalized forever when he first set foot on the moon 44 years ago tomorrow (July 20, 1969), followed minutes later by the lunar module pilot, NASA astronaut Buzz Aldrin.
The Saturn V rockets first stage was powered by a cluster of five F-1 engines – a technological marvel and the most powerful single-nozzle, liquid-fueled rocket engine ever developed.
“44 years ago tomorrow Neil Armstrong stepped onto the moon, and now we have recovered a critical technological marvel that made it all possible,” says Bezos on his Expedition website today.
Apollo 11 Saturn V F-1 Engine Thrust Chamber recovered from the floor of the Atlantic Ocean- stenciled with Rocketdyne serial number “2044”. Credit: Jeff Bezos Expeditions
Bezos, founder and Chief Executive Officer of the aerospace company Blue Origin and Amazon.com, originally announced the discovery and recovery of significant components of two flown F-1 engines amongst a field of twisted wreckage from the floor of the Atlantic Ocean in March of this year, aboard the Seabed Worker at Port Canaveral, Florida, along with a treasure trove of other major Saturn V components hauled up from a depth of almost 3 miles.
“We brought back thrust chambers, gas generators, injectors, heat exchangers, turbines, fuel manifolds and dozens of other artifacts – all simply gorgeous and a striking testament to the Apollo program,” wrote Bezos in a update this morning, July 19.
But until today, the engines exact identification remained elusive because of decades of severe seabed corrosion and their fiery, destructive end upon plunging and smashing unimpeded onto the ocean’s surface.
Saturn V F-1 Engine nozzle recovered from the floor of the Atlantic Ocean. Credit: Jeff Bezos Expeditions
Conservators from the Kansas Cosmosphere and Space Center in Hutchinson, Kansas worked painstakingly since March to identify the F-1 engine parts.
“Today, I’m thrilled to share some exciting news. One of the conservators who was scanning the objects with a black light and a special lens filter has made a breakthrough discovery – “2044” – stenciled in black paint on the side of one of the massive thrust chambers, says Bezos.
“2044 is the Rocketdyne serial number that correlates to NASA number 6044, which is the serial number for F-1 Engine #5 from Apollo 11. The intrepid conservator kept digging for more evidence, and after removing more corrosion at the base of the same thrust chamber, he found it – “Unit No 2044” – stamped into the metal surface.”
Blacklight view of Apollo 11 Saturn V F-1 Engine recovered from the floor of the Atlantic Ocean with identifying “2044” serial number. Credit: Jeff Bezos Expeditions
Apollo 11 launched to the Moon on July 16, 1969 from Launch Complex 39-A at the Kennedy Space Center in Florida.
Armstrong and Aldrin landed on the Sea of Tranquility inside the Lunar Module. They took a single lunar excursion and spent 2 hours and 11 minutes as the first two men to walk on the moon. They stayed on the moon for a total of 21 hours and 36 minutes before blasting off for the journey back home to Earth.
Armstrong suddenly passed away nearly a year ago on August 25, 2012 at age 82 – read my stories, here and here.
Aldrin is still active and strenuously advocating for starting human expeditions to the Red Planet.
He outlined his exploration concepts in a newly published book titled – “Mission to Mars.”
The five F-1 engines used in the 138-foot-tall Saturn V first stage known as the S-IC generated 7.5 million pounds of liftoff thrust, or some 1.5 million pounds each. They stand 19 feet tall by 12 feet wide. Each one weighs over 18,000 pounds and was manufactured by Rocketdyne.
The F-1 had more power than all three space shuttle main engines combined. They burned a mixture of liquid oxygen and kerosene fuel for two-and-one-half-minutes, carrying the Saturn V to an altitude of some 36 miles.
Altogether, six Apollo Moon landing flights boosted by Saturn V’s sent a total of 12 humans on moon walking expeditions to Earth’s nearest neighbor during the 1960s and 1970s.
“This is a big milestone for the project and the whole team couldn’t be more excited to share it with you all,” Bezos wrote.
Bezos’ Blue Origin firm is also working to develop a commercial rocket and ‘space taxi’ to finally resume launching American astronauts back to low Earth orbit from American soil after a multi year gap.
More than four decades have passed since the last humans traversed the lunar surface in December 1972 during NASA’s Apollo 17 moon landing mission.
After all that time, the F-1 may yet live again.
NASA is now working on an upgraded F-1 to power a future variant of the new SLS heavy lift booster under development and intended to launch humans aboard the new Orion crew capsule back to the Moon and to deep space destinations including Asteroids and Mars.
Neil Armstrong and Buzz Aldrin plant the US flag on the Lunar Surface during 1st human moonwalk in history – exactly 44 years ago on July 20, 1969 during Apollo 1l mission. Credit: NASA
This photo was taken on January 22, 2012 in Fairbanks North Star Borough County, Alaska, US, using a Nikon D5000. The explodey look is due to perspective from looking right up the magnetic field lines. The aurora in the middle of the explosion is pointing straight down at the camera. Credit: Jason Ahrns
A military program to investigate auroras in the north appears to have been suspended.
The High Frequency Active Auroral Research Program (HAARP)’s website (dead link here) is not available right now, and there’s been some media speculation about the program’s future. So far, though, our attempts to learn more about the situation have turned up little information.
When Universe Today reached out to Keeney, however, he declined comment. We also got in touch with the public affairs officials at Kirtland Air Force Base, who said no one was immediately available for an interview and provided this statement:
A screenshot of Google Earth, with ionosphere overlayed (Google)
“HAARP is currently in contract negotiations and our policy is not to comment on current contract negotiations,” stated Marie M. Vanover, the director of Kirtland public affairs. “HAARP’s website is expected to be reopened and populated with the new and current information within 2-3 weeks.”
The program is jointly managed by the U.S. Air Force Research Laboratory and the U.S. Naval Research Laboratory to investigate activity in the ionosphere, the region of the Earth’s atmosphere where auroras occur. It includes an array of dozens of antennas that, media reports say, energize parts of the ionosphere.
HAARP is also the target of many conspiracy theories, ranging from warnings that it would trigger a change in the Earth’s magnetic poles to accusations that it is actually a weapon prototype. You can read more about the unproven allegations in this 2009 Wired article.
We’ll keep you posted on the facility’s status as we hear more.
Just one of the many images from Cassini used to make up "Around Saturn"
In honor of this today’s Wave at Saturn and The Day the Earth Smiled events, celebrating images to be taken of Earth from Saturn, here’s a wonderful movie showing highlights from Cassini’s exploration of the giant planet, its magnificent rings, and fascinating family of moons.
Assembled by Fabio Di Donato in memory of astrophysicist, author and activist Margherita Hack, who passed away June 29 at the age of 91, this video is an impressive tour of the Saturnian system — and a truly stunning tribute as well.
“She made me love the stars,” Fabio wrote.
This video shows a selection from more than 200,000 pictures taken by the Cassini spacecraft around Saturn’s rings in a period between 2005 and 2013. RAW images were processed to PNG thanks to the Vicar-to-PNG procedure provided by Jessica McKellar.
The music is Jazz Suite No.2: VI Waltz 2 by Shostakovich, performed by the Armonie Symphony Orchestra.
As always, you can see the latest images and news from the Cassini mission here, and find out how your photo is going to be taken from 900 million miles away (and also 60 million miles away from Mercury!) here.
Video: Fabio Di Donato. Original images: NASA/JPL-Caltech/SSI.
P.S.: Want to get a personalized certificate saying you “Waved at Saturn?” Click here.
Dinosaurs roamed the Earth for 135 million years. Filling every ecological niche, from the oceans, forests and plains; even the skies.
Then, 66 million years ago, something terrible happened. In a geological instant, 75% of the plants and animals on Earth went extinct. And all of the land dinosaurs were wiped off the Earth forever.
What happened? What killed them off?
What could have caused that much damage in such a short amount of time?
The key to this mystery was found in a strange layer of ash sandwiched between layers of rock deposited 66 million years ago. This line, known as the Cretaceous-Paleogene boundary, is found across the world in the geologic record and it marks the moment when everything DIED. What’s interesting about this layer is that it’s rich in iridium, a rare element on Earth, but abundant in asteroids.
And so, geologists found the most likely culprit: an asteroid.
This evidence matched the discovery of an enormous asteroid impact basin in the Yucatán Peninsula in Mexico, centered near the town of Chicxulub. The rock debris in this area could be dated back to approximately 66 million years old, matching the worldwide layer of ash.
We now know that an asteroid at least ten kilometres across slammed off the coast of Mexico 66 million years ago, releasing 2 million times more energy than the most powerful nuclear bomb ever detonated.
The effect of this impact is mindblowing.
Chicxulub CraterMillions of tonnes of rock were ejected into space on ballistic trajectories. Reheated by atmospheric re-entry, this debris superheated the air across the entire planet, catching the world’s forests on fire.
Shockwaves radiated outward from the impact site, inducing earthquakes and volcanoes along their path. Mega tsunamis thousands of meters high spread out from the impact site, pounding coastlines around the world.
Dust rained down across the planet. It filled the air, darkening the skies for decades, and preventing photosynthesis. Plants on land and in the oceans were unable to produce energy.
The planet cooled from the choking dust and aerosols, followed by years of acid rain, and then even global warming as the carbon from the blasted life filled the atmosphere.
Artists concept of asteroid impact eventThe effects to life were devastating.
It’s no surprise the land dinosaurs didn’t make it through this impact event. In fact, it’s a bigger surprise that our ancient ancestors, hardy early mammals could endure.
And our final sobering thought is that impacts of this scale have happened many times in the past, and will happen again in the future.
A look at what Cassini's point of view will be at the time of the #WaveAtSaturn event. Image courtesy Mike Smithwick and Distant Suns.
You’ve hopefully heard about the chance to have your picture taken this Friday – along with the rest of humanity – by the Cassini spacecraft, currently about 1 billion km away as it orbits Saturn. But now another spacecraft has joined in on the fun.
Inspired in part by the Cassini team, scientists from the MESSENGER mission at Mercury realized their upcoming orbital parameters has Earth coincidentally in the crosshairs of its cameras as it takes images to search for natural satellites around Mercury on July 19 and 20. So we’ve got not one, but TWO spacecraft to smile at, pose for, and generally be on good behavior as they take pictures of planet Earth. Here’s when you should be smiling and waving:
MESSENGER will be taking images at 11:49, 12:38, and 13:41 UTC (4:49 a.m., 5:38 a.m. and 6:41 a.m. PDT or 7:49 a.m., 8:38 a.m. and 9:41 a.m. EDT, or) on both days, July 19 and 20. Parts of Earth not illuminated in the Cassini images, including all of Europe, the Middle East and Central Asia, will appear illuminated in the MESSENGER images. MESSENGER’s images also will take a few days to process prior to release, the team said.
The image taken from the Saturn system by NASA’s Cassini spacecraft will occur between 21:27 and 21:47 UTC (2:27 and 2:42 PDT, 5:27 and 5:42 p.m. EDT) on Friday, July 19. Cassini will be nearly 900 million miles (nearly 1.5 billion kilometers) away from Earth. NASA is encouraging the public to look and wave in the direction of Saturn at the time of the portrait and share their pictures via the Internet.
The ‘Wave at Saturn” event will be the first time Earthlings have had advance notice that their picture will be taken from interplanetary distances. Credit: NASA/JPL-Caltech
Also, at the exact time the Cassini spacecraft is snapping pics of Earth, the Slooh Space Camera will be snapping images of Saturn – live and in true color – with live broadcast team. Their feed starts at 2:30 PM PDT / 5:30 PM EDT / 21:30 UTC with live views of Saturn from the Canary Islands.
Astronomers Without Borders is also sponsoring a special Saturn Observing Program, and they are encouraging people and organizations to either organize a special observing event for July 19 (you can register it as an official event here) or to attend an event near you. You can find TDTES events here. This can be a full-blown observing event with telescopes, or just an excuse to get together with friends to go out and look at Saturn in the night sky.
As NASA’s fiscal 2014 budget proceeds through Congress, it’s still quite the ping-pong ball match to try to figure out where their budget numbers will fall. How do you think the budget will end up? Leave your thoughts in the comments.
Also, be sure to watch the latest markup on the NASA bill occurring today when the House Committee on Science, Space and Technology meets — the webcast is here. It starts at 11:15 a.m. EDT/3:15 p.m. GMT.
– Obama administration initial request – $17.7 billion: Unveiled in early April, the $17.7 billion “tough choices” NASA budget was for $50 million less than requested in 2013; the actual FY 2013 budget was $16.6 billion due to cuts and sequestration. While reducing funding opportunities for planetary science, the FY 2014 budget provided funding for a NASA mission to capture an asteroid. The asteroid mission proposal, in later weeks, did not impress at least one subcommittee.
It appears that NASA’s proposed Space Launch System is getting budgetary support from at least some House members. Credit: NASA
– U.S. Senate Appropriations Subcommittee on Commerce, Justice, Science, and Related Agencies – $18 billion: On Tuesday, the Senate subcommittee suggested an allocation to NASA of $18 billion. A press release says the budget level will give “better balance for all of NASA’s important missions, including $373 million more for science that helps us to better understand Earth and own solar system while peering at new worlds way beyond the stars. The Senate also provides $597 million more to let humans explore beyond low earth orbit while safely sending our astronauts to the space station on U.S. made vehicles.”
– NASA’s reaction: David Weaver, NASA’s associate administrator for communications, said the agency is “deeply concerned” about the House funding levels. “While we appreciate the support of the Committee, we are deeply concerned that the bill under consideration would set our funding level significantly below the President’s request,” he wrote in a blog post, adding, “We are especially concerned the bill cuts funding for space technology – the “seed corn” that allows the nation to conduct ever more capable and affordable space missions – and the innovative and cost-effective commercial crew program, which will break our sole dependence on foreign partners to get to the Space Station. The bill will jeopardize the success of the commercial crew program and ensure that we continue to outsource jobs to Russia.”
– Reaction of Commercial Spaceflight Federation: Much the same as NASA. “Less funding for the commercial
NASA fears there will not be enough money to fund commercial providers such as SpaceX (Dragon cargo spacecraft pictured) who aim to bring astronauts to the space station themselves. Credit: NASA/CSA/Chris Hadfield
crew program simply equates to prolonged dependence on foreign launch providers,” stated federation president Michael Lopez-Alegria, who is a former NASA astronaut. “As a nation, we should be doing our utmost to regain the capability of putting astronauts in orbit on American vehicles as soon as possible.”
– What’s next: The House Committee on Science, Space and Technology markup of the NASA bill takes place starting at 11:15 a.m. EDT/3:15 p.m. GMT (again, watch the webcast at this link.) We’ll keep you posted on what they say. The Planetary Society’s Casey Dreier, who said $16.6 billion is the smallest NASA budget in terms of purchasing power since 1986, points out that the House doesn’t have the final say: “The Senate still needs to weigh in, so this House budget is not the last word in the matter, but it’s deeply troubling. You can’t turn NASA on and off like a spigot. Cuts now will echo through the coming decades.”
