Space

September 21, 2012

NASA Mars rover targets unusual rock en route to first destination

NASA’s Mars rover Curiosity has driven up to a football-size rock that will be the first for the rover’s arm to examine.

Curiosity is about 8 feet (2.5 meters) from the rock. It lies about halfway from Curiosity’s landing site, Bradbury Landing, to a location called Glenelg. In coming days, the team plans to touch the rock with a spectrometer to determine its elemental composition and use an arm-mounted camera to take close-up photographs.

Both the arm-mounted Alpha Particle X-Ray Spectrometer and the mast-mounted, laser-zapping Chemistry and Camera Instrument will be used for identifying elements in the rock. This will allow cross-checking of the two instruments.

The rock has been named “Jake Matijevic.” Jacob Matijevic was the surface operations systems chief engineer for Mars Science Laboratory and the project’s Curiosity rover. He passed away Aug. 20, at age 64. Matijevic also was a leading engineer for all of the previous NASA Mars rovers: Sojourner, Spirit and Opportunity.

Curiosity now has driven six days in a row. Daily distances range from 72 feet to 121 feet.

“This robot was built to rove, and the team is really getting a good rhythm of driving day after day when that’s the priority,” said MSL Project Manager Richard Cook of NASA’s Jet Propulsion Laboratory in Pasadena, Calif.

The team plans to choose a rock in the Glenelg area for the rover’s first use of its capability to analyze powder drilled from interiors of rocks. Three types of terrain intersect in the Glenelg area – one lighter- toned and another more cratered than the terrain Curiosity currently is crossing. The light-toned area is of special interest because it retains daytime heat long into the night, suggesting an unusual composition.

“As we’re getting closer to the light-toned area, we see thin, dark bands of unknown origin,” said Mars Science Laboratory Project Scientist John Grotzinger of the California Institute of Technology, Pasadena. “The smaller-scale diversity is becoming more evident as we get closer, providing more potential targets for investigation.”

Researchers are using Curiosity’s Mast Camera (Mastcam) to find potential targets on the ground. Recent new images from the rover’s camera reveal dark streaks on rocks in the Glenelg area that have increased researchers’ interest in the area. In addition to taking ground images, the camera also has been busy looking upward.

On two recent days, Curiosity pointed the Mastcam at the sun and recorded images of Mars’ two moons, Phobos and Deimos, passing in front of the sun from the rover’s point of view. Results of these transit observations are part of a long-term study of changes in the moons’ orbits. NASA’s twin Mars Exploration Rovers, Spirit and Opportunity, which arrived at Mars in 2004, also have observed solar transits by Mars’ moons. Opportunity is doing so again this week.

“Phobos is in an orbit very slowly getting closer to Mars, and Deimos is in an orbit very slowly getting farther from Mars,” said Curiosity’s science team co-investigator Mark Lemmon of Texas A&M University. “These observations help us reduce uncertainty in calculations of the changes.”

In Curiosity’s observations of Phobos this week, the time when the edge of the moon began overlapping the disc of the sun was predictable to within a few seconds. Uncertainty in timing is because Mars’ interior structure isn’t fully understood.

Phobos causes small changes to the shape of Mars in the same way Earth’s moon raises tides. The changes to Mars’ shape depend on the Martian interior which, in turn, cause Phobos’ orbit to decay. Timing the orbital change more precisely provides information about Mars’ interior structure.

During Curiosity’s two-year prime mission, researchers will use the rover’s 10 science instruments to assess whether the selected field site inside Gale Crater ever has offered environmental conditions favorable for microbial life.

 




All of this week's top headlines to your email every Friday.


 
 

 

Headlines August 18, 2014

News: U.S. mission in Iraq could expand, Pentagon official says - The mission for U.S. troops in Iraq to help Kurdish and Iraqi security forces in their fight against Islamic militants remains limited for now, but may expand after Iraqi leaders form a new government, a Pentagon spokesman said Aug. 19.   Business: Fuel deals top...
 
 

News Briefs August 20, 2014

Trials complete on fourth Coast Guard cutter Ingalls Shipbuilding in Pascagoula, Miss., has completed acceptance sea trials for the company’s fourth U.S. Coast Guard national security cutter, Hamilton. Jim French, Ingalls’ NSC program manager, tells The Mississippi Press) the Hamilton is scheduled to be delivered next month and commissioned on Dec. 6 in Charleston, South...
 
 
Army photograph by Sgt. Thomas Duval

Air Force, Army Aviation come together to complete vital mission in Egypt

Army photograph by Sgt. Thomas Duval Soldiers and airmen load a UH-60 Black Hawk into an Air Force C17 Globemaster III Aug. 19, 2104, at an old Israeli airstrip in the Sinai Peninsula of Egypt. The airstrip is now used by the M...
 

 
Air Force photograph by TSgt. Terri Praden

Joint effort validates ability to move Stryker vehicles via air

Air Force photograph by TSgt. Terri Praden An Army Stryker combat vehicle is guided into a C-17 Globemaster III during a 25th Infantry Division training exercise Aug. 13, 2014, at Joint Base Pearl Harbor-Hickam, Hawaii. The Str...
 
 
NASA image

Ozone-depleting compound persists, NASA research shows

NASA image Satellites observed the largest ozone hole over Antarctica in 2006. Purple and blue represent areas of low ozone concentrations in the atmosphere; yellow and red are areas of higher concentrations. NASA research show...
 
 

F-16V completes major capability milestone

The newest configuration of the F-16 Fighting Falcon, the F-16V, has reached a major capability milestone with the integration of a new Active Electronically Scanned Array radar. Completing this milestone on schedule demonstrates our ability to meet program commitments, said Roderick McLean, vice president and general manager of the F-16/F-22 Integrated Fighter Group at Lockheed...
 




0 Comments


Be the first to comment!


Leave a Reply

Your email address will not be published. Required fields are marked *

You may use these HTML tags and attributes: <a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <cite> <code> <del datetime=""> <em> <i> <q cite=""> <strike> <strong>