Space

January 25, 2013

Mars Science Lab prepares to drill for samples

The right Mast Camera (Mastcam) of NASA’s Curiosity Mars rover provided this view of the lower stratigraphy at “Yellowknife Bay” inside Gale Crater on Mars. The rectangle superimposed on the left image shows the location of the enlarged portion on the right. In the right image, white arrows point to veins (including some under the overhang), and black arrows point to concretions (small spherical concentrations of minerals). Both veins and concretions strongly suggest precipitation of minerals from water. The scale bar in the left image is 19.7 inches long. The scale bar in the right image is 3.9 inches long.

After a successful first use of the Mars Dusting Tool, Curiosity is ready to start drilling into the surface of Mars. This has never been done before.

“Drilling into a rock to collect a sample will be this mission’s most challenging activity since the landing. It has never been done on Mars,” said Mars Science Laboratory project manager Richard Cook of NASA’s Jet Propulsion Laboratory in Pasadena, Calif.

“The drill hardware interacts energetically with Martian material we don’t control. We won’t be surprised if some steps in the process don’t go exactly as planned the first time through.

Curiosity first will gather powdered samples from inside the rock and use those to scrub the drill. Then the rover will drill and ingest more samples from this rock, which it will analyze for information about its mineral and chemical composition.

The chosen rock is in an area where Curiosity’s Mast Camera (Mastcam) and other cameras have revealed diverse unexpected features, including veins, nodules, cross-bedded layering, a lustrous pebble embedded in sandstone, and possibly some holes in the ground.

The rock chosen for drilling is called “John Klein” in tribute to former Mars Science Laboratory deputy project manager John W. Klein, who died in 2011. His leadership skill played a crucial role in making Curiosity a reality,” said Cook.

The target is on flat-lying bedrock within a shallow depression called “Yellowknife Bay.” The terrain in this area differs from that of the landing site, a dry streambed about a third of a mile (about 500 meters) to the west. Curiosity’s science team decided to look there for a first drilling target because orbital observations showed fractured ground that cools more slowly each night than nearby terrain types do.

The orbital signal drew us here, but what we found when we arrived has been a great surprise,” said Mars Science Laboratory project scientist John Grotzinger, of the California Institute of Technology in Pasadena. “This area had a different type of wet environment than the streambed where we landed, maybe a few different types of wet environments.”

This line of evidence comes from inspection of light-toned veins with Curiosity’s laser-pulsing Chemistry and Camera (ChemCam) instrument, which found elevated levels of calcium, sulfur and hydrogen.

These veins are likely composed of hydrated calcium sulfate, such as bassinite or gypsum,” said ChemCam team member Nicolas Mangold of the Laboratoire de Planetologie et Geodynamique de Nantes in France. “On Earth, forming veins like these requires water circulating in fractures.

Researchers have used the rover’s Mars Hand Lens Imager (MAHLI) to examine sedimentary rocks in the area. Some are sandstone, with grains up to about peppercorn size. One grain has an interesting gleam and bud-like shape that have brought it Internet buzz as a “Martian flower.” Other rocks nearby are siltstone, with grains finer than powdered sugar. These differ significantly from pebbly conglomerate rocks in the landing area.

These are sedimentary rocks, telling us Mars had environments actively depositing material here,” said MAHLI deputy principal investigator Aileen Yingst of the Planetary Science Institute in Tucson, Ariz. “The different grain sizes tell us about different transport conditions.”

 




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


 
 

 

Headlines April 20, 2015

News: Sale of U.S. arms fuels the wars of Arab states - As the Middle East descends into proxy wars, sectarian conflicts and battles against terrorist networks, countries in the region that have stockpiled American military hardware are now actually using it and wanting more. U.S. spending $1 billion to reassure European allies - From Army rotations...
 
 

News Briefs April 20, 2015

Last two Raiders give congressional medal to Ohio museum The last two ìDoolittle Tokyo Raidersî have presented their Congressional Gold Medal for permanent display at a museum in southwest Ohio. The medal arrived at the National Museum of the U.S. Air Force near Dayton in a ceremonial B-25 bomber flight. The medal was awarded by...
 
 
Northrop Grumman photograph

Space Solar Power Initiative established by Northrop Grumman, Caltech

Northrop Grumman photograph Northrop Grumman’s Joseph Ensor (left) and Caltech’s Ares Rosakis (right) shake hands as part of the recent SSPI commemoration event held at the California Institute of Technology, Pasade...
 

 
Navy photograph

Triton UAS conducts first flight with search radar

Navy photograph The MQ-4C Triton unmanned aircraft takes off from Naval Air Station Patuxent River, Md., April 16, to conduct its first flight from the naval base. The aircraft began sensor testing on April 18 and flew with its...
 
 

UTC introduces active side-sticks to large commercial aviation

UTC Aerospace Systems is introducing the world’s first active side-stick controller for large commercial aircraft. UTC Aerospace Systems is a unit of United Technologies Corp. UTC Aerospace Systems’ Actuation & Propeller business unit is supplying the active side-sticks for the cockpit of the new Irkut MC-21 single aisle aircraft. The MC-21 family of aircraft will...
 
 

Boeing presents flight test 787 Dreamliner to air, space museum

Boeing, elected and community leaders joined together April 17 to celebrate the permanent display of one of the original 787-8 Dreamliner flight test airplanes at the Pima Air & Space Museum. “Boeing has a strong presence in Arizona and is proud to share this important achievement in aviation history with the community, our employees and...
 




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>