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 October 1, 2014

Veterans: Substantial VA staff will face discipline - A substantial number of VA employees will face punishment for the veterans treatment scandal, the new national commander of the American Legion predicted Sept. 30, indicating that the slow pace of discipline has more to do with the hoops the department must jump through than it does a...
 
 

News Briefs October 1, 2014

Egypt president gives army control of arms imports The Egyptian president has amended a law, giving the country’s army control over weapons and ammunition imports. The Sept. 30 statement from the presidency says Abdel-Fattah el-Sissi changed articles stipulating that a permit for weapons’ imports has to be granted by the Interior Ministry, which is in...
 
 
atk-test

ATK successfully tests Orion launch abort motor igniter

NASA and ATK successfully completed a static test of the launch abort motor igniter for the Orion crew capsule’s Launch Abort System. Conducted at ATK’s facility in Promontory, Utah, this test is the next step towa...
 

 
uav-coalition

Small UAV coalition launched to advance commercial use of unmanned aerial vehicles

Leading technology companies Oct. 1 formally announced the formation of the Small UAV Coalition to help pave the way for commercial, philanthropic, and civil use of small unmanned aerial vehicles in the United States and abroad...
 
 
Navy photograph

NAWCWD manned for unmanned systems

Navy photograph A rail launch is performed during Integrator unmanned aerial vehicle testing at Naval Air Warfare Center Weapons Division China Lake, Calif. Naval Air Warfare Center Weapons Division scientists, engineers, techn...
 
 
NASA photograph by Ken Ulbrich

NASA employees go ‘above and beyond’

Courtesy photograph NASA Chief Scientist Albion Bowers, Christopher Miller and Nelson Brown receive the Exception Engineering Achievement Medal at Armstrong Research Center, Edwards Air Force Base, Calif. The prestigious award ...
 




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>