Posted on by Jason Major

SOFIA Gives Scientists a First-Class View of a Supernova

This Image of M82 including a supernova at near-infrared wavelengths J, H, and K (1.2, 1.65, and 2.2 microns), made Feb. 20 by the FLITECAM instrument on SOFIA. (NASA/SOFIA/FLITECAM team/S. Shenoy)

Astronomers wanting a closer look at the recent Type Ia supernova that erupted in M82 back in January are in luck. Thanks to NASA’s Stratospheric Observatory for Infrared Astronomy (SOFIA) near-infrared observations have been made from 43,000 feet — 29,000 feet higher than some of the world’s loftiest ground-based telescopes.

(And, technically, that is closer to M82. If only just a little.)

All sarcasm aside, there really is a benefit from that extra 29,000 feet. Earth’s atmosphere absorbs a lot of wavelengths of the electromagnetic spectrum, especially in the infrared and sub-millimeter ranges. So in order to best see what’s going on in the Universe in these very active wavelengths, observational instruments have to be placed in very high, dry (and thus also very remote) locations, sent entirely out into space, or, in the case of SOFIA, mounted inside a modified 747 where they can simply be flown above 99% of the atmosphere’s absorptive water vapor.

NASA's airborne SOFIA observatory (SOFIA/USRA)
NASA’s airborne SOFIA observatory (SOFIA/USRA)

During a recent 10-hour flight over the Pacific, researchers aboard SOFIA turned their attention to SN2014J, one of the closest Type Ia “standard candle” supernovas that have ever been seen. It appeared suddenly in the relatively nearby Cigar Galaxy (M82) in mid-January and has since been an exciting target of observation for scientists and amateur skywatchers alike.

In addition to getting a bird’s-eye-view of a supernova, they used the opportunity to calibrate and test the FLITECAM (First Light Infrared Test Experiment CAMera) instrument, a near infrared camera with spectrographic capabilities mounted onto SOFIA’s 2.5-meter German-built main telescope.

What they’ve found are the light signatures of heavy metals being ejected by the exploding star. (Rock on, SN2014J.)

“When a Type Ia supernova explodes, the densest, hottest region within the core produces nickel 56,” said Howie Marion from the University of Texas at Austin, a co-investigator aboard the flight. “The radioactive decay of nickel-56 through cobalt-56 to iron-56 produces the light we are observing tonight. At this life phase of the supernova, about one month after we first saw the explosion, the H- and K-band spectra are dominated by lines of ionized cobalt. We plan to study the spectral features produced by these lines over a period of time and see how they change relative to each other. That will help us define the mass of the radioactive core of the supernova.”

Three images of M82 and the supernova SN2014J, including one from the FLITECAM instrument on SOFIA (right). Credit: NASA/SOFIA/FLITECAM team/S. Shenoy
Three images of M82 and the supernova SN2014J, including one from the FLITECAM instrument on SOFIA (right). Credit: NASA/SOFIA/FLITECAM team/S. Shenoy

Further observations from SOFIA will help researchers learn more about the evolution of Type Ia supernovas, which in addition to being part of the life cycles of certain binary-pair stars are also valuable tools used by astronomers to determine distances to far-off galaxies.

Researchers work at the FLITECAM instrument station on board SOFIA on Feb. 20 (NASA/SOFIA/N. Veronico)
Researchers work at the FLITECAM instrument station on board SOFIA on Feb. 20 (NASA/SOFIA/N. Veronico)

“To be able to observe the supernova without having to make assumptions about the absorption of the Earth’s atmosphere is great,” said Ian McLean, professor at UCLA and developer of FLITECAM. “You could make these observations from space as well, if there was a suitable infrared spectrograph to make those measurements, but right now there isn’t one. So this observation is something SOFIA can do that is absolutely unique and extremely valuable to the astronomical community.”

Read more in a SOFIA news article by Nicholas Veronico here.

Source: SOFIA Science Center, NASA Ames

UPDATE 4 March 2014: The FY 2015 budget request proposed by the White House will effectively shelf the SOFIA mission, redirecting its funding toward planetary missions like Cassini and an upcoming Europa mission. Unfortunately, SOFIA’s flying days are now numbered, unless German partner DLR increases its contribution. Read more here. 

Posted on by Elizabeth Howell

Relive Apollo 9’s Moon Lander Test 45 Years Ago Through Incredible NASA Images

Apollo 9's lunar module, "Spider", during a test in 1969. Credit: NASA

Hard to believe the decades fly by so fast. It was 45 years ago today that the crew of Apollo 9 took off from the Kennedy Space Center en route to a big test of the lunar module. Being March 1969, history shows that it was only about four months later when men touched the moon for the first time ever.

Getting to the moon, however, required making sure that the lunar landing craft was in tip-top shape. This was the first test of the lunar module in space. Apollo 9 astronauts Jim McDivitt, Rusty Schweickart and Dave Scott spent several days shaking out the spacecraft in the relative safety of Earth orbit.

The mission is perhaps best remembered for the first docking of “Spider” (the lunar module) and “Gumdrop” (the command module), but plenty happened during their March 3-13, 1969 mission. You can relive some of the most memorable moments of training and the mission in the gallery below. More information on the mission is available at NASA.

Apollo 9 astronauts Jim McDivitt (front) and Rusty Schweickart inside the lunar module mission simulator at the Kennedy Space Center. Apollo 9 flew in March 1969. Credit: NASA
Apollo 9 astronauts Jim McDivitt (front) and Rusty Schweickart inside the lunar module mission simulator at the Kennedy Space Center. Apollo 9 flew in March 1969. Credit: NASA
Spotlights shine on the Saturn V rocket carrying Apollo 9 prior to its launch from the Kennedy Space Center on March 3, 1969. Credit: NASA
Spotlights shine on the Saturn V rocket carrying Apollo 9 prior to its launch from the Kennedy Space Center on March 3, 1969. Credit: NASA
The Apollo 9 astronauts walk out to the vehicle that will take them out to the launch pad, hours before launch on March 3, 1969. From left: Jim McDivitt (commander), Dave Scott (command module pilot) and Rusty Schweickart (lunar module pilot). Credit: NASA
The Apollo 9 astronauts walk out to the vehicle that will take them out to the launch pad, hours before launch on March 3, 1969. From left: Jim McDivitt (commander), Dave Scott (command module pilot) and Rusty Schweickart (lunar module pilot). Credit: NASA
The launch of Apollo 9 on March 3, 1969. Credit: NASA
The launch of Apollo 9 on March 3, 1969. Credit: NASA
Apollo 9's "Spider" lunar module lies nestled in the third stage of the Saturn V rocket that carried it to space in March 1969. Credit: NASA
Apollo 9’s “Spider” lunar module lies nestled in the third stage of the Saturn V rocket that carried it to space in March 1969. Credit: NASA
Apollo 9 lunar module pilot Rusty Schweickart during a spacewalk in March 1969. Here, he was standing on the porch of the lunar module "Spider." Credit: NASA
Apollo 9 lunar module pilot Rusty Schweickart during a spacewalk in March 1969. Here, he was standing on the porch of the lunar module “Spider.” Credit: NASA
Apollo 9 lunar module pilot Rusty Schweickart during a spacewalk in March 1969. Credit: NASA
Apollo 9 lunar module pilot Rusty Schweickart during a spacewalk in March 1969. Credit: NASA
Apollo 9 commander Jim McDivitt (right) drinks from a hand water dispenser while lunar module pilot Rusty Schweickart looks on. Photo is a still from a March 1969 television broadcast. Credit: NASA
Apollo 9 commander Jim McDivitt (right) drinks from a hand water dispenser while lunar module pilot Rusty Schweickart looks on. Photo is a still from a March 1969 television broadcast. Credit: NASA
Apollo 9 commander Jim McDivitt shows off several days' beard growth during March 1969. The photo was taken in lunar module "Spider". Credit: NASA
Apollo 9 commander Jim McDivitt shows off several days’ beard growth during March 1969. The photo was taken in lunar module “Spider”. Credit: NASA
Apollo 9's lunar module "Spider" during a test in March 1969. Credit: NASA
Apollo 9’s lunar module “Spider” during a test in March 1969. Credit: NASA
Apollo 9 astronaut Dave Scott during a spacewalk from the command module in March 1969. The Mississippi River is visible in the background. Credit: NASA
Apollo 9 astronaut Dave Scott during a spacewalk from the command module in March 1969. The Mississippi River is visible in the background. Credit: NASA
A recovery helicopter picks up Apollo 9 command module "Gumdrop" and brings it to recovery ship USS Guadalcanal on March 13, 1969. Click for larger version. Credit: NASA / Elizabeth Howell (photo combination)
A recovery helicopter picks up Apollo 9 command module “Gumdrop” and brings it to recovery ship USS Guadalcanal on March 13, 1969. Click for larger version. Credit: NASA / Elizabeth Howell (photo combination)
The Apollo 9 astronauts await recovery from a helicopter from USS Guadalcanal on March 13, 1969. The crew included Jim McDivitt (in hatch), Rusty Schweickart (far right, in foreground) and Dave Scott (behind Schweickart). The other people are frogmen from the recovery team. Credit: NASA
The Apollo 9 astronauts await recovery from a helicopter from USS Guadalcanal on March 13, 1969. The crew included Jim McDivitt (in hatch), Rusty Schweickart (far right, in foreground) and Dave Scott (behind Schweickart). The other people are frogmen from the recovery team. Credit: NASA
The Apollo 9 aboard the recovery ship USS Guadalcanal on March 13, 1969. From left: Rusty Schweickart (lunar module pilot), Dave Scott (command module pilot) and Jim McDivitt (commander). Credit: NASA
The Apollo 9 aboard the recovery ship USS Guadalcanal on March 13, 1969. From left: Rusty Schweickart (lunar module pilot), Dave Scott (command module pilot) and Jim McDivitt (commander). Credit: NASA
Posted on by Elizabeth Howell

Neil Armstrong’s Name Now Graces A NASA Research Center In California

Neil Armstrong in the LM after his historic moonwalk (NASA)

Neil Armstrong — the first man on the moon, who died in 2012 — will now be the namesake of one of NASA’s research centers. A new law designated the Armstrong Flight Research Center took effect March 1, replacing the old name since 1976, the Dryden Flight Research Center.

Former NASA deputy administrator Hugh L. Dryden will still see his name in the area, however, as the center’s 12,000-square-mile (31,000-square-kilometer) Western Aeronautical Test Range is now called Dryden Aeronautical Test Range.

“I cannot think of a more appropriate way to honor these two leaders who broadened our understanding of aeronautics and space exploration,” stated NASA administrator Charles Bolden.

“Both Dryden and Armstrong are pioneers whose contributions to NASA and our nation still resonate today. Armstrong was the first person to walk on the moon. Dryden’s expertise at the National Advisory Committee for Aeronautics and then at NASA established America’s leadership in aerospace, and his vision paved the way for Armstrong to take those first steps.”

NASA astronaut Neil Armstrong earlier in his career, when he flew X-15s at the NACA High-Speed Flight Station (now called the NASA Armstrong Flight Research Center). Credit: NASA
NASA astronaut Neil Armstrong earlier in his career, when he flew X-15s at the NACA High-Speed Flight Station (now called the NASA Armstrong Flight Research Center). Credit: NASA

At the center, Armstrong is probably best remembered for his flights in the X-15, a rocket-powered aircraft that set several altitude and speed records in the 1960s. At what was then the NACA High-Speed Flight Station, he flew seven times in that particular experimental aircraft, along with 41 other kinds of aircraft, between 1955 and 1962. Armstrong was also involved with development of a predecessor to a lunar landing training vehicle used in the Apollo missions (which almost killed Armstrong in a practice run for Apollo 11).

The astronaut flew two space flights. On Gemini 8 in 1966, he drew praise for stopping a rapid spin on the spacecraft when a thruster became stuck open. He was then tapped to command Apollo 11, making a successful landing on the moon in 1969 on the last dregs of fuel his spacecraft had available.

Neil Armstrong at the Kennedy Space Center (KSC) Saturn V Exhibit (Control Room) for the 30th Anniversary of Apollo 11 on July 16, 1999. Credit: John Salsbury
Neil Armstrong at the Kennedy Space Center (KSC) Saturn V Exhibit (Control Room) for the 30th Anniversary of Apollo 11 on July 16, 1999. Credit: John Salsbury

Armstrong’s connection with the research center continued after he left the astronaut corps, when he was NASA’s deputy associate administrator for aeronautics. In this capacity, NASA wrote, he was “overseeing aeronautical research programs being conducted at the center, particularly its pioneering work on developing digital electronic flight control systems.”

Armstrong, who his family called a “reluctant American hero”, died Aug. 25, 2012 of complications after cardiovascular surgery. You can read more about Armstrong’s exploits at NACA in this fact sheet, and more about Dryden here.

The center is located on California’s Edwards Air Force Base. Renaming was directed in legislation authored by Rep. Kevin McCarthy (R) of California’s 22nd district (and also the house majority whip), NASA stated. After the bill passed the U.S. House of Representatives in 2013 and the Senate in January, President Barack Obama signed the name into law Jan. 16. A renaming ceremony is expected in the spring.

Armstrong is the second astronaut to have a center named after him. The Lewis Research Center in Cleveland was renamed Glenn Research Center after Sen. John Glenn (D) in 1999. Glenn flew twice in space. In 1962,  Glenn became the first American to orbit the Earth. He then returned to space in 1998 at the age of 77, becoming the oldest person to fly in space to date.

Posted on by Elizabeth Howell

Force Of Movie ‘Gravity’ Attracts ‘Best Director’, 6 Other Oscars

Gravity movie poster
Gravity movie poster

The movie ‘Gravity’ ended up being a force to reckon with at the 86th Academy Awards on Sunday, with the space thriller pulling in seven Oscars — including Best Director.

Starring Sandra Bullock and George Clooney, the movie followed the aftermath of an orbital disaster. Despite criticism from some about the movie’s accuracy, the film picked up 10 nominations and numerous good vibes from critics. (The movie has a 97% “Fresh” rating on Rotten Tomatoes). You can see congratulations from NASA astronauts Mike Massimino and Cady Coleman below the jump.

“Like any other human endeavor, a film is a transformative experience, and I want to thank Gravity because for many of us involved in this film, it was definitely a transformative experience,” said director Alfonso Cuarón in his acceptance speech last night (March 2).

“And it’s good because it took so long, if not, it would be a waste of time. It really sucks,” he joked, “because for a lot of people, the transformative experience was wisdom. For me, it was just the colour of my hair.”

Among the people Cuarón paid tribute to was Sandra Bullock, who was nominated for ‘Best Lead Actress’ but lost out to Cate Blanchett, who won for her performance in Blue Jasmine.

Sandra Bullock in a still from the movie 'Gravity.' Credit: Regency Enterprises/Warner Bros. Entertainment
Sandra Bullock in a still from the movie ‘Gravity.’ Credit: Regency Enterprises/Warner Bros. Entertainment

“You’re Gravity,’  Cuarón  said to Bullock from the stage. “You’re the soul, heart of the film. You’re a most amazing collaborator and one of the best people I’ve ever met.”

The movie attracted 7 wins of its 10 Oscar nominations, failing to earn ‘Best Picture’ (which went to 12 Years A Slave), ‘Achievement in Production Design’ (given to American Hustle). and ‘Best Lead Actress’ Its wins were:

  • Best director (Alfonso Cuarón);
  • Achievement in cinematography (Emmanuel Lubezki);
  • Achievement in film editing (Alfonso Cuarón and Mark Sanger);
  • Achievement in music written for motion pictures (Original score) (Steven Price);
  • Achievement in sound editing (Glenn Freemantle);
  • Achievement in sound mixing (Skip Lievsay, Niv Adiri, Christopher Benstead and Chris Munro);
  • Achivement in visual effects (Tim Webber, Chris Lawrence, Dave Shirk and Neil Corbould).

Posted on by Susie Murph

Carnival of Space #343

Carnival of Space. Image by Jason Major.
Carnival of Space. Image by Jason Major.

This week’s Carnival of Space is hosted by Allen Versfeld at his Urban Astronomer blog.

Click here to read Carnival of Space #343.

And if you’re interested in looking back, here’s an archive to all the past Carnivals of Space. If you’ve got a space-related blog, you should really join the carnival. Just email an entry to [email protected], and the next host will link to it. It will help get awareness out there about your writing, help you meet others in the space community – and community is what blogging is all about. And if you really want to help out, sign up to be a host. Send an email to the above address.

Posted on by Ken Kremer

Curiosity Rover pauses mid-drive and captures Spectacular Martian Mountain Snapshot

Mars rock rows and Mount Sharp. Martian landscape scene with rows of striated rocks in the foreground and Mount Sharp on the horizon. NASA's Curiosity Mars rover paused mid drive at the Junda outcrop to snap the component images for this navcam camera photomosaic on Sol 548 (Feb. 19, 2014) and then continued traveling southwards towards mountain base. UHF Antenna at right. Credit: NASA/JPL-Caltech/Marco Di Lorenzo/Ken Kremer-kenkremer.com

Mars rock rows and Spectacular Mount Sharp
Martian landscape scene with rows of striated rocks in the foreground and spectacular Mount Sharp on the horizon. NASA’s Curiosity Mars rover paused mid drive at the Junda outcrop to snap the component images for this colorized navcam camera photomosaic on Sol 548 (Feb. 19, 2014) and then continued traveling southwards towards mountain base. UHF Antenna at right.
Credit: NASA/JPL-Caltech/Marco Di Lorenzo/Ken Kremer-kenkremer.com
See stereo 3-D and look back views below[/caption]

Like any good tourist, NASA’s rover Curiosity apparently couldn’t resist the photobug urge from a gorgeous Martian mountain scene she happened by recently and decided to pull over and enjoy the view.

So she stopped the dune buggy mid-drive on the sandy road to her daily destination one Sol last week on Feb. 19, powered up the camera suite and excitedly snapped a spectacular landscape view of a striated rock field dramatically back dropped by towering Mount Sharp on the horizon.

See our Mars rocks and Mount Sharp photomosaic above and a 3-D stereoscopic view from NASA below.

The sedimentary foothills of Mount Sharp, which reaches 3.4 miles (5.5 km) into the Martian sky, is the 1 ton robots ultimate destination inside Gale Crater because it holds caches of water altered minerals.

Martian Landscape With Rock Rows and Mount Sharp (Stereo) This stereo landscape scene from NASA's Curiosity Mars rover on Feb. 19, 2014 shows rows of rocks in the foreground and Mount Sharp on the horizon. It appears three dimensional when viewed through red-blue glasses with the red lens on the left. Credit: NASA/JPL-Caltech
Martian Landscape With Rock Rows and Mount Sharp (Stereo) This stereo landscape scene from NASA’s Curiosity Mars rover on Feb. 19, 2014 shows rows of rocks in the foreground and Mount Sharp on the horizon. It appears three dimensional when viewed through red-blue glasses with the red lens on the left. Credit: NASA/JPL-Caltech

And just for good measure, Curiosity also snapped a series of breathtaking look back photos showing her tracks in the dune filled terrain from whence she came since straddling through the Dingo Gap gateway. See our mosaics below.

The panoramic mountain view taken on Sol 548 shows rows of striated rocks all oriented in a similar direction in the foreground with Mount Sharp in the background.

Curiosity looks back across dune field to her wheel tracks and a small crater she just missed. Flattened rear hazcam image, colorized from Sol 555 (Feb 27, 2014). Credit: NASA/JPL-Caltech/Marco Di Lorenzo/Ken Kremer-kenkremer.com
Curiosity looks back across dune field to her wheel tracks and a small crater she just missed. Flattened rear hazcam image, colorized from Sol 555 (Feb 27, 2014). Credit: NASA/JPL-Caltech/Marco Di Lorenzo/Ken Kremer-kenkremer.com

Scientists directed Curiosity to drive by the rock rows nicknamed “Junda” after their interest was piqued by orbital images taken by the powerful telescopic camera on NASA’s Mars Reconnaissance Orbiter (MRO) circling overhead.

The six wheeled rover paused during the planned Feb. 19 drive of 328 feet (100 meters) to capture the imagery.

She then pushed forward to finish the day’s drive and snapped another fabulous look back view – see our mosaic below.

And the next day on Feb. 20 (Sol 549), she also completed her second 100 meter drive in reverse.

Her handlers are occasionally commanding Curiosity to drive backwards in a newly tested bid to minimize serious damage to the six 20 inch diameter wheels in the form of rips and tears caused by rough edged Red Planet rocks – see our wheel mosaic below.

Curiosity looks back at Martian sand dunes and rover tracks after passing by Junda outcrop (right) on Sol 548 (Feb. 19, 2014) with Gale Crater rim and Mount Sharp on the distant horizon. Navcam colorized photomosaic. Credit: NASA/JPL-Caltech/Ken Kremer- kenkremer.com/Marco Di Lorenzo
Curiosity looks back at Martian sand dunes and rover tracks after passing by Junda outcrop (right) on Sol 548 (Feb. 19, 2014) with Gale Crater rim and Mount Sharp on the distant horizon. Navcam colorized photomosaic. Credit: NASA/JPL-Caltech/Ken Kremer- kenkremer.com/Marco Di Lorenzo

Curiosity is well on the way to her next near term goal, which is a science waypoint, named Kimberly (formerly called KMS-9), which lies about half a mile ahead.

Kimberly is of interest to the science team because it sits at an the intersection of different rock layers and also features ground with striations like those at “Junda”.

Curiosity looks back eastward to ‘Dingo Gap’ sand dune inside Gale Crater. After crossing over the 3 foot (1 meter) tall dune on Sol 539, Feb. 9, 2014 the rover drove westward into the ‘Moonlight Valley’. The parallel rover wheel tracks are 9 feet (2.7 meters) apart. Assembled from Sol 539 colorized navcam raw images. Credit: NASA/JPL/ Ken Kremer- kenkremer.com/Marco Di Lorenzo
Curiosity looks back eastward to ‘Dingo Gap’ sand dune inside Gale Crater. After crossing over the 3 foot (1 meter) tall dune on Sol 539, Feb. 9, 2014 the rover drove westward into the ‘Moonlight Valley’. The parallel rover wheel tracks are 9 feet (2.7 meters) apart. Assembled from Sol 539 colorized navcam raw images. Credit: NASA/JPL/ Ken Kremer- kenkremer.com/Marco Di Lorenzo

So, after the rover reaches Kimberly, researchers plan to temporarily halt driving for awhile to investigate the location and direct the robot to drill into another rock to collect samples for analysis by the two state- of-the -art chemistry labs.

If drilling is warranted, Kimberly would be the site of Curiosity’s first drilling operation since the Cumberland outcrop target was bored into during the spring of 2013 at Yellowknife Bay.

Curiosity departed the Yellowknife Bay region in July 2013 where she discovered a habitable zone and thereby accomplished the primary goal of the mission.

To date Curiosity’s odometer stands at 5.3 kilometers and she has taken over 125,000 images.

The robot has somewhat less than another 5 km to go to reach the base of Mount Sharp.

She perhaps may arrive sometime in mid 2014.

Arrival time at Mount Sharp depends on driving speed and whether the upcoming terrain is smoother or strewn with sharp edged rocks that have hindered progress due to accumulating wear and tear on the aluminum wheels.

Up close photomosaic view shows lengthy tear in rover Curiosity’s left front wheel caused by recent driving over sharp edged Martian rocks on the months long trek to Mount Sharp. Raw images taken by the MAHLI camera on Curiosity’s arm on Jan. 31, 2014 (Sol 529) were assembled to show some recent damage to several of its six wheels Credit: NASA / JPL / MSSS / Marco Di Lorenzo / Ken Kremer- kenkremer.com See below complete 6 wheel mosaic and further wheel mosaics for comparison
Up close photomosaic view shows lengthy tear in rover Curiosity’s left front wheel caused by recent driving over sharp edged Martian rocks on the months long trek to Mount Sharp. Raw images taken by the MAHLI camera on Curiosity’s arm on Jan. 31, 2014 (Sol 529) were assembled to show some recent damage to several of its six wheels Credit: NASA / JPL / MSSS / Marco Di Lorenzo / Ken Kremer- kenkremer.com See below complete 6 wheel mosaic and further wheel mosaics for comparison

Meanwhile, NASA’s sister Opportunity rover is exploring clay mineral outcrops by the summit of Solander Point on the opposite side of Mars at the start of her 2nd Decade investigating the Red Planet’s mysteries.

A pair of new orbiters are streaking to the Red Planet to fortify Earth’s invasion fleet- NASA’s MAVEN and India’s MOM.

Stay tuned here for Ken’s continuing Curiosity, Opportunity, Chang’e-3, GPM, SpaceX, Orbital Sciences, LADEE, MAVEN, MOM, Mars and more planetary and human spaceflight news. Learn more at Ken’s upcoming presentations at the NEAF convention on April 12/13.

Ken Kremer

Curiosity’s View Past Tall Dune at edge of ‘Dingo Gap’ This photomosaic from Curiosity’s Navigation Camera (Navcam) taken at the edge of the entrance to the Dingo Gap shows a 3 foot (1 meter) tall dune and valley terrain beyond to the west, all dramatically back dropped by eroded rim of Gale Crater. View from the rover’s current position on Sol 528 (Jan. 30, 2014). The rover team may decide soon whether Curiosity will bridge the dune gap as a smoother path to next science destination. Credit: NASA/JPL-Caltech/Marco Di Lorenzo/Ken Kremer- kenkremer.com
Curiosity’s View Past Tall Dune at edge of ‘Dingo Gap’
This photomosaic from Curiosity’s Navigation Camera (Navcam) taken at the edge of the entrance to the Dingo Gap shows a 3 foot (1 meter) tall dune and valley terrain beyond to the west, all dramatically back dropped by eroded rim of Gale Crater. View from the rover’s current position on Sol 528 (Jan. 30, 2014). The rover team may decide soon whether Curiosity will bridge the dune gap as a smoother path to next science destination. Credit: NASA/JPL-Caltech/Marco Di Lorenzo/Ken Kremer- kenkremer.com
Posted on by Jason Major

NEOWISE Spots a “Weirdo” Comet

Infrared image of comet NEOWISE (C/2014 C3). Credit: NASA/JPL-Caltech

NASA’s NEOWISE mission — formerly known as just WISE — has identified the first comet of its new near-Earth object hunting career… and, according to mission scientists, it’s a “weirdo.”

In its former life NASA’s WISE (Wide-field Infrared Survey Explorer) spacecraft scanned the entire sky in infrared wavelengths. It helped discover the galaxy’s coldest stars, the Universe’s brightest galaxies, and some of the darkest asteroids lurking in the main asteroid belt between Mars and Jupiter… as well as closer in to Earth’s neck of the woods.

After exhausting its supply of liquid coolant needed to shield itself from its own radiating heat, in 2011 WISE was put into a state of hibernation. It was awoken last year and rebranded NEOWISE, and set upon the task of locating unknown objects with orbits in the proximity of Earth’s.

Kevin Luhman discovered the brown dwarf pair in data from NASA's Wide-field Infrared Survey Explorer (WISE; artist's impression). Image: NASA/JPL-Caltech
Artist’s impression of the WISE satellite

To date several new asteroids have already been found by NEOWISE, and on February 14, 2014, it spotted its first comet.

“We are so pleased to have discovered this frozen visitor from the outermost reaches of our solar system,” said Amy Mainzer, NEOWISE principal investigator at JPL. “This comet is a weirdo — it is in a retrograde orbit, meaning that it orbits the sun in the opposite sense from Earth and the other planets.”

Designated “C/2014 C3 (NEOWISE),” the comet was 143 million miles (230 million km) away in the image above — a composite made from six infrared exposures. That’s 585 times the distance to the Moon, or about the average distance between the Earth and Mars.

The tail of the comet NEOWISE extends about 25,000 miles (40,000 km) to the right in the image.

Overall, C/2014 C3 (NEOWISE) was spotted six times before it moved out of range of the spacecraft’s view. The comet has a highly-eccentric 20-year orbit that takes it high above the plane of the Solar System and out past the orbit of Jupiter. Technically, with a perihelion distance greater than 1.3 AU, comet C/2014 C3 does not classify as a near-Earth object (and its orbit does not intersect Earth’s.) But it’s still good to know that NEOWISE is looking out for us.

Read more on JPL’s NEOWISE site here, and see details on the comet’s orbit on the Minor Planet Center’s website here and from JPL’s Small-Body Database here.

Source: NASA/JPL

Posted on by Nancy Atkinson

Astrophotographer’s Dream: Venus and Milky Way Galaxy Over Singapore

Rise of Venus and the Milky Way in Singapore on Feb. 28, 2014. Credit and copyright: Justin Ng.

“My dream to capture the beautiful Milky Way galaxy in Singapore has finally come true this morning after the monsoon season is over,” said noted astrophotographer Justin Ng, who lives in this island country in South East Asia. Justin noted that since Singapore is known for its heavy light pollution, there are many people who believe it’s impossible to capture stars and the arc of the Milky Way under those conditions. Justin has been taking amazing deep sky and night sky photos for quite some time, but he said with this particular image he’s hoping to prove the naysayers wrong.

“Plus, I hope to inspire more astrophotographers residing in heavily light polluted city to try to capture these ‘impossible’ images,” Justin added.

UPDATE: Below is a new timelapse video from Justin Ng.

This is a single exposure shot of planet Venus and Milky Way Galaxy in Singapore. However, the light pollution near the horizon is also visible.

Justin has now created a timelapse of his Milky Way photography from the same night he took this image, and he says a timelapse like this never been attempted by any photographers in Singapore, this is is the first:

Rise of Milky Way and Venus in Singapore from Justin Ng Photo on Vimeo.

You can see more of Justin’s fantastic astrophotography at his website, on G+, Facebook and Twitter.

Want to get your astrophoto featured on Universe Today? Join our Flickr group or send us your images by email (this means you’re giving us permission to post them). Please explain what’s in the picture, when you took it, the equipment you used, etc.

Posted on by Elizabeth Howell

Did An Icy Collision Produce The Odd Shape Of Asteroid 624 Hektor?

Artist's impression of 624 Hektor, the largest known Trojan asteroid. The dual asteroid is 155 miles (250 kilometers) at its widest. It also has a 7.5-mile (12-mile) moon. Credit: H. Marchis/F. Marchis

Two icy asteroids could have crashed into each other early in the solar system’s history to form the strange-looking 624 Hektor, new research reveals. The 155-mile (250-kilometer) asteroid is the largest known Trojan asteroid, or space rock that follows along with Jupiter in the gas giant’s orbital path.

Hektor also has a moon, which was first discovered in 2006 by another team led by the same lead author, the SETI Institute’s Franck Marchis. It’s taken the astronomers about eight years to get a handle on the complex orbit of the system, a topic that the new research examines in detail. That was partly because the path was so “bizarre”, the team stated, and also because time on the W.M. Keck Observatory telescopes (used to perform the observations) is limited. There are few other observatories that could do the same work, the team added.

The moon, which is about 7.5 miles or 12 kilometers in diameter, orbits its parent asteroid every three days. The moon’s path is about 373 miles (600 km) distant and inclined almost at 45 degrees to the asteroid’s equator.

The Trojan asteroid 624 Hektor is visible in these two adaptive optics observations in July 2006 and October 2008, both performed with the W.M. Keck Observatory's II telescope. Hektor is in the middle of each picture, and its moon in the circles. Credit: WMKO/Marchis
The Trojan asteroid 624 Hektor is visible in these two adaptive optics observations in July 2006 and October 2008, both performed with the W.M. Keck Observatory’s II telescope. Hektor is in the middle of each picture, and its moon in the circles. Credit: WMKO/Marchis

“The orbit of the moon is elliptical and tilted relative to the spin of Hektor, which is very different from other asteroids with satellites seen in the main-belt,” stated Matija Cuk, a paper co-author who is a scientist at the Carl Sagan Center of the SETI Institute. “However, we did computer simulations, which include Hektor being a spinning football shape asteroid and orbiting the Sun, and we found that the moon’s orbit is stable over billions of years.”

While the artist’s conception above shows Hektor as a peanut, the exact shape is still not known for sure. The models and the adaptive optics suggest that it is likely a dual-lobe asteroid. What is better known, however, is that the asteroid is “extremely elongated” and spins in less than seven hours.

The origin of the moon is unclear, but the researchers suggested it could be because of ejecta associated with the collision that formed the asteroid. They said more simulations are needed on that point. What’s more, Hektor has another mystery associated with its composition.

An artist's rendering of a Kuiper Belt object. Image: NASA
An artist’s rendering of a Kuiper Belt object. Image: NASA

“We also show that Hektor could be made of a mixture of rock and ices, similar to the composition of Kuiper belt objects, Triton and Pluto. How Hektor became a Trojan asteroid, located at only 5 times the Earth–Sun distance, is probably related to the large scale reshuffling that occurred when the giant planets were still migrating,” stated Julie Castillo-Rogez, a researcher at NASA’s Jet Propulsion Laboratory who participated in the research.

You can read more about the research in Astrophysical Journal Letters. By the way, the moon does not have a name yet, and the researchers said they are looking for any ideas as long as it fulfills a couple of ideas: “the satellite should receive a name closely related to the name of the primary and reflecting the relative sizes between these objects.” Feel free to share your suggestions in the comments.

Source: W.M. Keck Observatory