Voyager 1 acquired this image of Io on March 4, 1971. An enormous volcanic explosion can be seen silhouetted against dark space over Io's bright limb. Credit: NASA/JPL.
Recent observations of Jupiter’s moon Io has revealed a massive volcanic eruption taking place 628,300,000 km (390,400,000 miles) from Earth. Io, the innermost of the four largest moons around Jupiter, is the most volcanically active object in the Solar System with about 240 active regions. But this new one definitely caught the eye of Dr. Imke de Pater, Professor of Astronomy and of Earth and Planetary Science at the University of California in Berkeley. She was using the Keck II telescope on Mauna Kea in Hawaii on August 15, 2013 when it immediately became apparent something big was happening at Io.
“When you are right at the telescope and see the data, this is something you can see immediately, especially with a big eruption like that,” de Pater told Universe Today via phone.
de Pater said this eruption is one of the top 10 most powerful eruptions that have been seen on this moon. “It is a very energetic eruption that covers over a 30 square kilometer area,” she said. “For Earth, that is big, and for Io it is very big too. It really is one of the biggest eruptions we have seen.”
She added the new volcano appears to have a large energy output. “We saw a big eruption in 2001, which was in the Surt region, which is well known as the biggest one anyone has ever seen,” she said. “For this one, the total energy is less but per square meter, it is bigger than the one in 2001, so it is very powerful.”
While Io’s eruptions can’t be seen directly from Earth,infrared cameras on the Keck telescope (looking between 1 and 5 microns) have been able to ascertain there are likely fountains of lava gushing from fissures in the Rarog Patera region of Io, aptly named for a Czech fire deity.
While many regions of Io are volcanically active, de Pater said she’s not been able to find any other previous activity that has been reported in the Rarog Patera area, which the team finds very interesting.
Ashley Davies of NASA’s Jet Propulsion Laboratory in Pasadena, California and a member of the observing team told Universe Today that Rarog Patera was identified as a small, relatively innocuous hot spot previously in Galileo PPR data and possibly from Earth, but at a level way, way below what was seen on August 15, and reported in New Scientist.
de Pater and other astronomers will be taking more data soon with Keck and perhaps more telescopes to try and find out more about this massive eruption.
“We never know about eruptions – they can last hours, days months or years, so we have no idea how long it will stay active,” she said, “but we are very excited about it.”
No data or imagery has been released on the new eruption yet since the team is still making their observations and will be writing a paper on this topic.
Scientists think a gravitational tug-of-war with Jupiter is one cause of Io’s intense vulcanism.
This concept image shows an astronaut retrieving a sample from the captured asteroid. Credit: NASA.
NASA has released some new photos and video animations outlining the concept of how their planned asteroid capture mission will work. The plan is to find, capture, redirect a near-Earth asteroid to a stable point near the Moon in order to explore and study it. As we’ve said previously, it’s still unclear if NASA will receive Congressional funding or authorization to do an asteroid retrieval mission, but the agency is moving ahead with its planning work for now.
NASA recently did a mission formulation review to look at some internal studies on the mission, as well as taking a look at over 400 ideas the space community submitted concerning the mission.
The new images show crew operations including the Orion spacecraft’s trip to and rendezvous with the relocated asteroid, as well as astronauts maneuvering through a spacewalk to collect samples from the asteroid.
You can watch the video and see more images below.
This conceptual image shows NASA’s Orion spacecraft approaching the robotic asteroid capture vehicle. The trip from Earth to the captured asteroid will take Orion and its two-person crew an estimated nine days. Credit: NASAIn this conceptual image, the two-person crew uses a translation boom to travel from the Orion spacecraft to the captured asteroid during a spacewalk. Credit: NASA.Artist’s Concept of a Solar Electric Propulsion System. Credit: Analytical Mechanics Associates
NASA is also looking at new technologies like a Solar Electric Propulsion System is an essential part of future missions into deep space with larger payloads. The use of advanced SEP offers more mission flexibility, NASA said.
If you’d like to get involved or add your input, NASA will host a technical workshop at the Lunar and Planetary Institute in Houston from Sept. 30 to Oct. 2 to discuss potential ideas. Virtual participation will be available to the public, and when the details of how to participate become available, Universe Today will post an update.
LADEE Minotaur V Launch - Maximum Elevation Map This map shows the maximum elevation (degrees above the horizon) that the Minotaur V rocket will reach during the Sep. 6, 2013 launch depending on your location along the US east coast. Credit: Orbital Sciences
LADEE Minotaur V Launch – Maximum Elevation Map
The LADEE nighttime launch will be visible to millions of spectators across a wide area of the Eastern US -weather permitting. This map shows the maximum elevation (degrees above the horizon) that the Minotaur V rocket will reach during the Sep. 6, 2013 launch depending on your location along the US east coast. Credit: Orbital Sciences [/caption]
A spectacular nighttime blastoff blazing a historic trail to the Moon is set to soar in two weeks time when NASA’s LADEE spacecraft lifts off from the Eastern Shore of Virginia at NASA’sWallops Flight Facility on Wallops Island – from America’s newest spaceport.
NASA’s Lunar Atmosphere and Dust Environment Explorer (LADEE) Observatory will thunder to space at 11:27 p.m. Friday, Sept. 6, from the commercial Mid-Atlantic Regional Spaceport (MARS) launch complex 0B at NASA’s Wallops Island facility atop the maiden flight of the new, solid fueled Minotaur V rocket developed by Orbital Sciences Corp.
LADEE’s late night launch will be absolutely spectacular and visible to tens of millions of spectators up and down the US East coast and interior areas stretching into the Midwest- weather permitting.
“I love this mission,” said John Grunsfeld, NASA Associate Administrator for Science at NASA Headquarters, at a media briefing today, Aug. 22.
LADEE’s Ticket to the Moon – 5th Stage of new Minotaur V rocket
Close-up view of STAR 37 5th stage solid fuel motor for inaugural Minotaur V rocket launch at NASA Wallops rocket facility will propel LADEE into its lunar transfer orbit. LADEE will be mounted on top and surrounded by the payload fairing attached at bottom ring. Credit: Ken Kremer/kenkremer.com
“With NASA’s prior LRO and GRAIL spacecraft we studied the Moon’s surface and interior. Now with LADEE we study the atmosphere and dust,” said John Grunsfeld.
The purpose of LADEE is to collect data that will inform scientists in unprecedented detail about the ultra thin lunar atmosphere, environmental influences on lunar dust and conditions near the surface. In turn this will lead to a better understanding of other planetary bodies in our solar system and beyond.
The small car sized LADEE lunar orbiter mission will be historic in many ways. It’s the first probe of any kind ever launched to beyond Earth orbit from NASA Wallops, as well as being the first planetary science mission from Wallops.
It also marks the first launch of a five stage rocket and the first launch of a decommissioned Peacekeeper missile from Wallops.
The first three stages of the Minotaur V are based on the nuclear armed Peacekeeper ICBM intercontinental ballistic missile built during the Cold War – now retired and refurbished by Orbital for peaceful uses. Its literally beating sword into ploughshares.
The 5th stage is a new addition and what makes this Minotaur a new rocket class. The added thrust is precisely what enables shooting for the Moon.
Recently, I had an exclusive tour and photoshoot up close and personal with the upper stages of LADEE’s Minotaur V rocket at Wallops prior to integration at the commercial launch pad – 0B – and will be reporting on that here and in upcoming stories.
4th and 5th stages of the inaugural Minotaur V rocket launch that will propel NASA’s LADEE lunar spacecraft to the Moon on Sep. 6, 2013 from NASA Wallops Island in Virginia. Credit: Ken Kremer/kenkremer.com
“LADEE is equipped with three science instruments to study the atmosphere and dust and a lunar laser technology demonstration,” said Joan Salute, LADEE program executive, NASA Headquarters.
These include an ultraviolet and visible light spectrometer that will gather detailed information about the composition of the tenuous lunar atmosphere; a neutral mass spectrometer to measure variations in the lunar atmosphere over time; a laser dust experiment that will collect and analyze dust particle samples; and a laser communications experiment that will test the use of lasers in place of radio waves for high speed dad communications with Earth.
“The lunar atmosphere is so thin that the molecules never collide,’ said Sarah Noble, LADEE program scientist, NASA Headquarters.
“It’s a ‘Surface Boundary Exosphere’ which is actually the most common type of atmosphere in our Solar System.”
Scientists also hope to solve a mystery dating back nearly five decades to the Apollo moon landing era, by determining if electrically charged lunar dust is responsible for the pre-sunrise horizon glow seen by the Apollo astronauts and also by the unmanned Surveyor 7 lander, according to Noble.
“This is the first NASA mission with a dedicated laser communications experiment,” said Don Cornwell, mission manager for the Lunar Laser Communications Demonstration, NASA’s Goddard Space Flight Center, Greenbelt, Md.
I asked when we could see laser communications implemented on future NASA spacecraft?
“A new laser communications system could possibly be used on the 2020 Mars rover from the surface of Mars,” Grunsfeld told Universe Today.
The couch sized 844 pound (383 kg) robotic explorer was assembled at NASA’s Ames Research Center, Moffett Field, Calif., and is a cooperative project with NASA Goddard Spaceflight Center in Maryland.
The spacecraft is a first of its kind vehicle built from a NASA Ames-developed Modular Common Spacecraft Bus architecture that can be applied to other missions. The mission cost is approximately $280 million.
The Minotaur V will boost LADEE into a highly elliptical orbit. Then over the next 23 days, as LADEE orbits Earth 3.5 times, the Moon’s gravitational field will increase the perigee of its orbit. The spacecraft will fire its on-board braking thrusters to achieve lunar orbit.
NASA Ames LADEE Mission – Lunar Orbital Insertion Animation
Video caption: This animation is a representation of lunar orbital insertion for LADEE, which is the path the spacecraft follows when it is captured by the Moon’s gravity and enters lunar orbit. Credit: NASA Ames/Dana Berry. Note: Animation is silent with no audio/music track included.
The mission will fly in a very low science orbit of about 50 kilometers altitude above the moon. The science mission duration is approximately 100 days.
“It’s limited by the amount of onboard fuel required to maintain orbit,” Doug Voss, launch manager, Wallops, told Universe Today.
“I’m excited about the night launch because people up and down the Atlantic seacoast will be able to see it,” Jim Green, Planetary Science Division Director at NASA HQ, told me.
And don’t forget that NASA has a 2nd really big launch from Wallops slated for Sep. 17 – with blastoff of the Orbital Sciences Antares rocket and Cygnus cargo carrier on their historic 1st mission to the International Space Station (ISS).
I’ll be on site at Wallops for both historic launches on Sep. 6 and 17 – reporting for Universe Today.
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Learn more about LADEE, Cygnus, Antares, MAVEN, Orion, Mars rovers and more at Ken’s upcoming presentations
Sep 5/6/16/17: “LADEE Lunar & Antares/Cygnus ISS Rocket Launches from Virginia”; Rodeway Inn, Chincoteague, VA, 8 PM
Oct 3: “Curiosity, MAVEN and the Search for Life on Mars – (3-D)”, STAR Astronomy Club, Brookdale Community College & Monmouth Museum, Lincroft, NJ, 8 PM
Oct 9: “LADEE Lunar & Antares/Cygnus ISS Rocket Launches from Virginia”; Princeton University, Amateur Astronomers Assoc of Princeton (AAAP), Princeton, NJ, 8 PM
Looking up the Flame Trench of the LADEE Minotaur V Launch Pad 0B at NASA Wallops Flight Facility in Virginia. Credit: Ken Kremer/kenkremer.com
Full disk view of the Sun on August 20, 2013. The prominences on the right side of the Sun in this image are the ones captured in the closeup image above. Credit and copyright: Michel Collart.
This close-up movie of looping, dancing prominences on the Sun looks like something you’d see from one of the spacecraft we have studying the Sun, such as the Solar Dynamics Observatory. However, the images were taken from Earth by amateur astronomer Michel Collart from France. He was able to capture incredible detail (see his list of equipment below) of this region on the Sun’s western limb, and in a series of 120 frames, shows a lot of activity taking place on the morning of August 20, 2013.
It is easy to become mesmerized watching the matter ejected at high speed from the surface, then falling back down due to the Sun’s gravity.
“We saw beautiful loops this morning, and as a bonus, we see a beautiful ejection of matter from the left and return to its starting point — great!” Collart posted on the WebAstro Forum.
And while these loops are huge – see the image below comparing the size of the Earth and Moon to the prominences — this is just a small area of the Sun.
See the full view of the Sun taken by Michel:
Full disk view of the Sun on August 20, 2013. The The ‘small’ prominences on the right side of the Sun in this image are the ones captured in the closeup image above — not the bigger prominences on the left side. Credit and copyright: Michel Collart.
And the comparison of sizes between the loops, Earth, the Moon and the distance between the Earth and Moon:
Size comparison of the looping prominences on the Sun on August 20, 2013. Credit and copyright: Michel Collart.
Michel told Universe Today that he’s been imaging the Sun for about 15 years and this is the first time he’s been able to take images of them. “These loops are very rare to catch,” he said.
The series of 120 frames (1 per 30 seconds, so 1 hour total) were taken by Michel on Tuesday August 20th, between 7:25 and 8:25 UTC on Tuesday, August 20, 2013, about the same time the Sun blasted a coronal mass ejection with billions of tons of solar particles toward Earth at the mind-boggling speed of 3.3 million km/h (2 million mph).
Here’s a video version of the loops, complete with music:
Michel Collart’s equipment and methods:
Michel Collart’s telescope and imaging set up. Image courtesy Michel Collart.
Takahashi Refractor TOA 130mm, Coronado Solarmax90 double stacked with Coronado PST etalon and blocking filter BF15, Televue 1.8x Barlow and Point Grey Camera Grasshopper3 ICX674 sensor.
120 videos of 10s spaced by 20s at 40 frames/s taken the 20/08/2013 between 7:25 and 8:25 GMT.
Processing: Autostakkert2 + Registax6 and export as video on Registax5, Finalizing the video in VirtualDub and export GIF
Thanks to Michel for allowing Universe Today to share his wonderful work!
A concept for windsurfing on Venus from the NASA Innovative Advanced Concepts office. Credit: NASA
A windsailing rover could use the high speeds and hot temperatures of Venus to a robotic explorer’s advantage, according to an idea funded by NASA’s Innovative Advanced Concepts program.
The rover would not only be able to move around Venus, but would also have electronics inside able to withstand the temperatures of 450 degrees Celsius (840 degrees Fahrenheit).
The rover, which is nicknamed Zephyr, would spend most of its time on Venus doing analysis on the ground. Whenever the science team wants to move some distance, however, it would deploy a sail that could bring it across the surface. One vision sees it sailing for about 15 minutes a day for about a month.
Artist’s conception of the atmosphere of Venus. Credit: ESA
“A sail rover would be extraordinary for Venus. The sail has only two moving parts-just to set the sail and set the steering position-and that doesn’t require a lot of power. There’s no power required to actually drive,” stated Geoffrey Landis, who is with NASA’s Glenn Research Center.
“The fundamental elements of a rover for Venus are not beyond the bounds of physics,” Landis added. “We could survive the furnace of Venus if we can come up with an innovative concept for a rover that can move on extremely low power levels.”
The Hubble image above shows a strange galaxy, known as Mrk 273. The odd shape – including the infrared bright center and the long tail extending into space for 130 thousand light-years – is strongly indicative of a merger between galaxies.
Near-infrared observations have revealed a nucleus with multiple components, but for years the details of such a sight have remained obscured by dust. With further data from the Keck Telescope, based in Hawaii, astronomers have verified that this object is the result of a merger between galaxies, with the infrared bright center consisting of two active galactic nuclei – intensely luminous cores powered by supermassive black holes.
At the center of every single galaxy is a supermassive black hole. While the name sounds exciting, our supermassive black hole, Sgr A* is pretty quiescent. But at the center of every early galaxy looms the opposite: an active galactic nuclei (AGN for short). There are plenty of AGN in the nearby Universe as well, but the question stands: how and when do these black holes become active?
In order to find the answer astronomers are looking at merging galaxies. When two galaxies collide, the supermassive black holes fall toward the center of the merged galaxy, resulting in a binary black hole system. At this stage they remain quiescent black holes, but are likely to become active soon.
“The accretion of material onto a quiescent black hole at the center of a galaxy will enable it to grow in size, leading to the event where the nucleus is “turned on” and becomes active,” Dr. Vivian U, lead author on the study, told Universe Today. “Since galaxy interaction provides means for gaseous material in the progenitor galaxies to lose angular momentum and funnels toward the center of the system, it is thought to play a role in triggering AGN. However, it has been difficult to pinpoint exactly how and when in a merging system this triggering occurs.”
While it has been known that an AGN can “turn on” before the final coalescence of the two black holes, it is unknown as to when this will happen. Quite a few systems do not host dual AGN. For those that do, we do not know whether synchronous ignition occurs or not.
Mrk 273 provides a powerful example to study. The team used near-infrared instruments on the Keck Telescope in order to probe past the dust. Adaptive optics also removed the blurring affects caused by the Earth’s atmosphere, allowing for a much cleaner image – matching the Hubble Space Telescope, from the ground.
“The punch line is that Mrk 273, an advanced late-stage galaxy merger system, hosts two nuclei from the progenitor galaxies that have yet to fully coalesce,” explains Dr. U. The presence of two supermassive black holes can be easily discerned from the rapidly rotating gas disks that surround the two nuclei.
“Both nuclei have already been turned on as evidenced by collimated outflows (a typical AGN signature) that we observe” Dr. U told me. Such a high amount of energy released from both supermassive black holes suggests that Mrk 273 is a dual AGN system. These exciting results mark a crucial step in understanding how galaxy mergers may “turn on” a supermassive black hole.
The team has collected near-infrared data for a large sample of galaxy mergers at different merging states. With the new data set, Dr. U aims “to understand how the nature of the nuclear star formation and AGN activity may change as a galaxy system progresses through the interaction.”
The results will be published in the Astrophysical Journal (preprint available here).
A simple, yet elegant method of measuring the surface gravity of a star has just been discovered. These computations are important because they reveal stellar physical properties and evolutionary state – and that’s not all. The technique works equally well for estimating the size of hundreds of exoplanets. Developed by a team of astronomers and headed by Vanderbilt Professor of Physics and Astronomy, Keivan Stassun, this new technique measures a star’s “flicker”. Continue reading “Flicker… A Bright New Method of Measuring Stellar Surface Gravity”
Curiosity Spies Mount Sharp - her primary destination. Curiosity will ascend mysterious Mount Sharp and investigate the sedimentary layers searching for clues to the history and habitability o the Red Planet of billions of years. This mosaic was assembled from Mastcam camera images taken on Sol 352 (Aug 2, 2013. Credit: NASA/JPL-Caltech/MSSS/ Marco Di Lorenzo/Ken Kremer
Curiosity Spies Mount Sharp – her primary destination. Curiosity will ascend mysterious Mount Sharp and investigate the sedimentary layers searching for clues to the history and habitability of the Red Planet over billions of years. But first she must safely trespass through the treacherous dark dunes fields. This mosaic was assembled from over 2 dozen Mastcam camera images taken on Sol 352 (Aug 2, 2013). Credit: NASA/JPL-Caltech/MSSS/ Marco Di Lorenzo/Ken Kremer
See the full mosaic below [/caption]
It’s never a dull moment for NASA’s Curiosity rover at T Plus 1 Year since touchdown on the Red Planet and T Minus 1 year to arriving at her primary target, the huge mountain overwhelming the center of the landing site inside Gale Crater.
Curiosity is literally and figuratively zooming in on stunningly beautiful and mysterious Mount Sharp (see our new mosaics above/below), her ultimate destination, while conducting ‘Science on the Go’ with her duo of chemistry labs – SAM and CheMin – and 8 other science instruments as she passes the 2 kilometer driving milestone today; Aug 20 !
“We are holding samples for drops to ChemMin and SAM when the science team is ready for it,” Jim Erickson, Curiosity Project Manager of NASA’s Jet Propulsion Laboratory (JPL), told Universe Today in an exclusive interview.
“Curiosity has landed in an ancient river or lake bed on Mars,” Jim Green, Director of NASA’s Planetary Science Division, told Universe Today.
So, those samples were altered by liquid Martian water – a prerequisite for life.
Curiosity Spies Mount Sharp – her primary destination. Curiosity will ascend mysterious Mount Sharp and investigate the sedimentary layers searching for clues to the history and habitability of the Red Planet over billions of years. But first she must safely trespass through the treacherous dark dunes fields. This mosaic was assembled from over 3 dozen Mastcam camera images taken on Sol 352 (Aug 2, 2013.
Credit: NASA/JPL-Caltech/MSSS/ Marco Di Lorenzo/Ken Kremer-kenkremer.com
In fact the car sized rover has saved samples from both the ‘John Klein’ and ‘Cumberland’ drill sites collected previously in the ‘Yellowknife Bay’ area for analysis by the miniaturized labs in the rovers belly -when the time is right.
“Curiosity has stored a Cumberland sample and still has a John Klein sample on board for future use,” Erickson explained.
And that time has now arrived!
“We have put a sample from the Cumberland drill hole into SAM for more isotopic measurements,” reported science team member John Bridges in a blog update on Sol 363, Aug. 14, 2013.
“The sample had been cached within the robotic arm’s turret.”
Curiosity is multitasking – conducting increasingly frequent traverses across the relatively smooth floor of Gale Crater while running research experiments for her science handlers back here on Earth.
NASA’s Curiosity rover make tracks to Mount Sharp (at left) across the floor of Gale Crater. The rover paused to image the windblown ripple at right, below the hazy crater rim. The wheel tracks are about eight feet apart. This panoramic mosaic was assembled from a dozen navcam camera images taken on Sol 354 (Aug 4, 2013). Credit: NASA/JPL-Caltech/Ken Kremer/Marco Di Lorenzo
She’s captured stunning new views of Mount Sharp – rising 5 km (3 miles) high into the sky – and movies of Mars tiny pair of transiting moons while ingesting new portions of the drilled rock samples acquired earlier this year.
Here’s our video compilation of Phobos and Deimos transiting on Aug 1, 2013
Video caption: Transit of Phobos in front of Deimos, taken by MSL right MastCam imager on Sol 351 around 3:12 AM local time (Aug 1, 2013, 8:42 UTC); 16 original frames + 14 interpolated (5x speed-up). Credit: NASA/JPL-Caltech/MSSS/ Marco Di Lorenzo/Ken Kremer
The sample analysis is still in progress.
“The SAM data have not all been received yet,” wrote science team member Ken Herkenhoff in a blog update.
Earlier analysis of sample portions from both ‘John Klein’ and ‘Cumberland’ revealed that the Yellowknife Bay area on Mars possesses the key mineral ingredients proving that Red Planet was once habitable and could have sustained simple microbial life forms.
The scientists are seeking further evidence and have yet to detect organic molecules – which are the building blocks of life as we know it.
This time lapse mosaic shows Curiosity maneuvering her robotic arm to drill into her 2nd martian rock target named “Cumberland” to collect powdery Martian material on May 19, 2013 (Sol 279) for analysis by her onboard chemistry labs; SAM & Chemin- see 3 inlet ports lower left. The photomosaic was stitched from raw images captured by the navcam cameras on May 14 & May 19 (Sols 274 & 279). Credit: NASA/JPL-Caltech/Ken Kremer/Marco Di Lorenzo
Yellowknife Bay resembles a dried out river bed where liquid water once flowed eons ago when the Red Planet was far warmer and wetter than today.
As the 1 ton robot ascends Mount Sharp, she will examine sedimentary layers layed down on ancient Mars over hundreds of millions and perhaps billions of years of past history and habitability.
And just as the rover was celebrating 1 year on Mars on Aug 5/6, she found an intriguing sand dune on Sol 354. See our mosaic
“The rover paused to take images of its tracks after crossing a windblown ripple,” Herkenhoff reported.
As the six wheeled rover approaches Mount Sharp over the next year, she will eventually encounter increasing treacherous dunes that she must cross before beginning her mountain climbing foray.
As of today, Sol 369 (Aug. 20) Curiosity has broken through the 2 kilometer driving mark with a new 70 meter drive, snapped over 75,000 images and fired over 75,000 laser shots.
Mount Sharp is about 8 kilometers (5 miles) distant as the Martian crow flies.
How long will the journey to Mount Sharp require?
“Perhaps about a year,” Erickson told me. “We are trying to make that significantly faster by bringing autonav [autonomous navigation software] online.”
“That will help. But how much it helps really depends on the terrain.”
So far so good.
Meanwhile NASA’s next Mars orbiter called MAVEN (for Mars Atmosphere and Volatile Evolution), recently arrived at the Kennedy Space Center after a cross country flight.
Kennedy technicians are completing assembly and check out preparations for MAVEN’s blastoff to the Red Planet on Nov. 18 from Florida atop an Atlas V rocket similar to the one that launched Curiosity nearly 2 years ago.
And I’ll be at Kennedy to report up close on MAVEN’s launch.
Wide-field Infrared Survey Explorer (WISE) spacecraft. Credit: NASA.
A hibernating spacecraft has been called back into service. The WISE (Wide-field Infrared Survey Explorer”) spacecraft that has been sleeping in a polar orbit around Earth for two years will be turned back on next month to hunt for more potentially hazardous asteroids, and perhaps search for an asteroid that NASA could capture and explore in the future.
“The WISE mission achieved its mission’s goals and as NEOWISE extended the science even further in its survey of asteroids. NASA is now extending that record of success, which will enhance our ability to find potentially hazardous asteroids, and support the new asteroid initiative,” said John Grunsfeld, NASA’s associate administrator for science. “Reactivating WISE is an excellent example of how we are leveraging existing capabilities across the agency to achieve our goal.”
WISE originally was launched in December 2009 and scanned the entire celestial sky in infrared light about 1.5 times, searching for the coolest stars, the universe’s most luminous galaxies and some of the darkest near-Earth asteroids and comets. It captured more than 2.7 million images of objects in space, ranging from faraway galaxies to asteroids and comets close to Earth.
However, in early October 2010, after completing its prime science mission, the spacecraft ran out of the frozen coolant that keeps its instrumentation cold. But two of its four infrared cameras remained operational, which were still optimal for asteroid hunting, so NASA extended the NEOWISE portion of the WISE mission by four months, with the primary purpose of hunting for more asteroids and comets, and to finish one complete scan of the main asteroid belt.
The NEOWISE mission completed a full sweep of the main asteroid belt, and during 2010, NEOWISE observed about 158,000 rocky bodies out of approximately 600,000 known objects. Discoveries included 21 comets, more than 34,000 asteroids in the main belt between Mars and Jupiter, and 135 near-Earth objects.
“The data collected by NEOWISE two years ago have proven to be a gold mine for the discovery and characterization of the NEO population,” said Lindley Johnson, NASA’s NEOWISE program executive in Washington. “It is important that we accumulate as much of this type of data as possible while the WISE spacecraft remains a viable asset.”
Now WISE will again search for asteroids with a new extra-extended three year mission to search for more PHAs as well as suitable asteroids for future human exploration missions.
Concept of NASA spacecraft with Asteroid capture mechanism deployed to redirect a small space rock to a stable lunar orbit for later study by astronauts aboard Orion crew capsule. Credit: NASA.
NASA said they anticipate WISE will use its 16-inch (40-centimeter) telescope and infrared cameras to discover about 150 previously unknown NEOs and characterize the size, albedo and thermal properties of about 2,000 others — including some of which could be candidates for the agency’s recently announced asteroid initiative.
“The team is ready and after a quick checkout, we’re going to hit the ground running,” said Amy Mainzer, NEOWISE principal investigator at NASA’s Jet Propulsion Laboratory in Pasadena, Calif. “NEOWISE not only gives us a better understanding of the asteroids and comets we study directly, but it will help us refine our concepts and mission operation plans for future, space-based near-Earth object cataloging missions.”
Atlantis begins the slow journey to Launch Pad 39A from the Vehicle Assembly Building (VAB) in preparation for the launch of STS-79 in 16 September 1996. This dramatic view looking directly down onto the shuttle stack atop the Mobile Launcher Platform (MLP) and crawler-transporter was taken from the VAB roof approximately 525 feet (160 meters) above the ground. In view are the Orbiter, orange External Tank and twin white Solid Rocket Boosters. Credit: NASA
If you’ve got a new use for the mobile launcher platforms NASA used for the shuttle program, the agency is all ears.
NASA invited government and commercial entities to submit their ideas for the platforms, which used to ferry the space shuttles and the Apollo rockets from the Vehicle Assembly Building to their launch pads.
Space shuttle Discovery on board one of the mobile launcher platforms. Credit: NASA
The ideal for NASA is to make them available for commercial launch activity. “Interested parties are requested to provide the following … estimated annual launch manifest, plans for retrofitting, storing, transporting, estimated schedule for acquiring use of the MLP(s), and the length of time the MLP(s) would be required for a particular activity,” the agency stated in a request for information.
Other options for the platforms could include modifying them for use in oil rigs, artificial reefs or even museum exhibits. Deconstruction is also being considered.
Each of the three platforms is two storeys tall, weigh 8.2 million pounds, with a platform of about 160 feet by 135 feet.
