Lozenge-shaped crystals are evident in this magnified view of a Martian rock target called 'Mojave,' taken on Nov. 15, 2014, by NASA's Curiosity Mars rover. These features record concentration of dissolved salts, possibly in a drying lake.
This image from the Mars Hand Lens Imager (MAHLI) camera on NASA's Curiosity Mars rover shows an example of a type of geometrically distinctive feature that researchers are using Curiosity to examine at a mudstone outcrop at the base of Mount Sharp.
This image from the Mars Hand Lens Imager (MAHLI) camera on NASA's Curiosity Mars rover shows the first sample-collection hole drilled in Mount Sharp, the layered mountain that is the science destination of the rover's extended mission.
NASA's Curiosity Mars rover used the Mars Hand Lens Imager (MAHLI) camera on its arm to catch the first images of sparks produced by the rover's laser being shot at a rock on Mars. The left image is from before the laser zapped this rock, called 'Nova'.
Curiosity's ChemCam Examines Mars Rock Target 'Nova'
A Martian target rock called 'Nova,' shown here, displayed an increasing concentration of aluminum as a series of laser shots from NASA's Curiosity Mars rover penetrated through dust on the rock's surface.
Curiosity Self-Portrait at 'Windjana' Drilling Site
NASA's Curiosity Mars rover used the MAHLI camera at the end of its arm in April and May 2014 to take dozens of component images combined into this self-portrait where the rover drilled into a sandstone target called '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.' The hole results from the test is 0.63 inch across and about 0.8 inch deep.
Martian Sandstone Target 'Windjana' Before and After Brushing
This image from an animation shows a patch of sandstone scrubbed with the Dust Removal Tool, a wire-bristle brush, on NASA's Curiosity Mars rover. This rock target is called 'Windjana,' after a gorge in Western Australia.
Mars Hand Lens Imager Sends Ultra High-Res Photo from Mars
This image of a U.S. penny on a calibration target was taken by the Mars Hand Lens Imager (MAHLI) aboard NASA's Curiosity rover in Gale Crater on Mars. At 14 micrometers per pixel, this is the highest-resolution image that MAHLI can acquire.
Pebbly Sandstone Conglomerate Rock at Curiosity's 'Waypoint 1'
This mosaic of nine images taken at a location called 'Darwin,' inside Gale Crater, were taken by NASA's Mars rover Curiosity and shows detailed texture in a conglomerate rock bearing small pebbles and sand-size particles.
View From Curiosity's Arm-Mounted Camera After a Long Drive
The MAHLI camera on NASA's Curiosity rover is carried at an angle when the rover's arm is stowed for driving. Still, the camera is able to record views of the terrain Curiosity is crossing in Gale Crater.
This image demonstrates how engineers place the drill carried by NASA's Mars rover Curiosity onto rock targets. They first set down the drill's two stabilizing prongs near the target, as shown by the dashed line.
This image taken by the Mars Hand Lens Imager (MAHLI) on NASA's Mars rover Curiosity shows the texture of the patch of flat-lying bedrock called 'Cumberland,' which was the mission's second target for use of the rover's sample-collecting drill.
NASA's Mars rover Curiosity drilled into this rock target, "Cumberland," during the 279th Martian day, or sol, of the rover's work on Mars (May 19, 2013) and collected a powdered sample of material from the rock's interior.
The gray area in center of this image is where the Dust Removal Tool on NASA's Mars rover Curiosity brushed a rock target called 'Wernecke.' The brushing revealed dark nodules and white veins crisscrossing the light gray rock.