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PRESS RELEASE
04.29.2014
Source: Jet Propulsion Laboratory

Target on Mars Looks Good for NASA Rover Drilling

UPDATE: April 30, 2014

NASA's Curiosity Mars rover performed a "mini-drill" operation Tuesday, April 29, on the rock target under consideration for the mission's third sample-collection drilling. This preparatory activity produced a hole about eight-tenths of an inch (2 centimeters) deep, as planned, in the target called "Windjana." The rover team plans to decide whether to proceed with deeper drilling of this rock in coming days.


Preparatory Drilling Test on Martian Target 'Windjana'
Preparatory Drilling Test on Martian Target 'Windjana'
NASA's Curiosity Mars rover completed a shallow "mini drill" test April 29, 2014, in preparation for full-depth drilling at a rock target called "Windjana." This image from Curiosity's Mars Hand Lens Imager shows the hole resulting from the test, 0.63 inch across and about 0.8 inch deep.

The team operating NASA's Curiosity Mars rover plans to proceed in coming days with the third-ever drilling into a rock on Mars to collect a sample for analysis.

The rover used several tools to examine the candidate site over the weekend, including a wire-bristle brush -- the Dust Removal Tool -- to clear away dust from a patch on the rock. The target slab of sandstone has been given the informal name "Windjana," after a gorge in Western Australia.

"In the brushed spot, we can see that the rock is fine-grained, its true color is much grayer than the surface dust, and some portions of the rock are harder than others, creating the interesting bumpy textures," said Curiosity science team member Melissa Rice of the California Institute of Technology, Pasadena. "All of these traits reinforce our interest in drilling here in order understand the chemistry of the fluids that bound these grains together to form the rock."

Before Curiosity drills deeply enough for collection of rock-powder sample, plans call for a preparatory "mini-drill" operation on the target, as a further check for readiness.

Curiosity's hammering drill collects powdered sample material from the interior of a rock, and then the rover prepares and delivers portions of the sample to laboratory instruments onboard. The first two Martian rocks drilled and analyzed this way were mudstone slabs neighboring each other in Yellowknife Bay, about 2.5 miles (4 kilometers) northeast of the rover's current location at a waypoint called "The Kimberley." Those two rocks yielded evidence last year of an ancient lakebed environment with key chemical elements and a chemical energy source that provided conditions billions of years ago favorable for microbial life.

Martian Sandstone Target "Windjana" Before and After Brushing
Martian Sandstone Target "Windjana" Before and After Brushing
This two-step animation shows before and after views of a patch of sandstone scrubbed with the Dust Removal Tool, a wire-bristle brush, on NASA's Curiosity Mars rover. Both images were taken April 26, 2014, by the Mars Hand Lens Imager on Curiosity's arm. The target rock is called "Windjana."

NASA's Mars Science Laboratory Project is using Curiosity to assess ancient habitable environments and major changes in Martian environmental conditions. NASA's Jet Propulsion Laboratory, a division of Caltech, built the rover and manages the project for NASA's Science Mission Directorate in Washington.

For more information about Curiosity, visit http://mars.jpl.nasa.gov/msl/ and http://www.nasa.gov/msl. You can follow the mission on Facebook at http://www.facebook.com/marscuriosity and on Twitter at http://www.twitter.com/marscuriosity.

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Guy Webster
Jet Propulsion Laboratory, Pasadena, California
818-354-6278
guy.webster@jpl.nasa.gov


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