02.08.2017 Mars Reconnaissance Orbiter Observes Changes
01.26.2017 Mono Lake
01.25.2017 'Wing' Dike of Hardened Lava in New Mexico
01.25.2017 Blade-Like Martian Walls Outline Polygons
01.23.2017 Spirit And Opportunity By The Numbers
01.10.2017 Mars 2020 Rover - Artist's Concept
01.06.2017 Earth and Its Moon, as Seen From Mars
12.13.2016 Now and Long Ago at Gale Crater, Mars
12.13.2016 Where's Boron? Mars Rover Detects It
11.15.2016 Schiaparelli Impact Site on Mars, Stereo
11.03.2016 Schiaparelli Impact Site on Mars, in Color
10.17.2016 MAVEN Captures Rapid Cloud Formation
10.17.2016 Mars' Nightside Atmosphere
10.17.2016 Ultraviolet Image Near Mars' South Pole
10.17.2016 Ultraviolet Mars Reveals Cloud Formation
10.05.2016 Dust Haze Hiding the Martian Surface in 2001
10.04.2016 Test of Lander Vision System for Mars 2020
10.03.2016 A Sharpened Ultraviolet View of Mars
10.03.2016 Curiosity Self-Portrait at 'Murray Buttes'
10.03.2016 Butte 'M9a' in 'Murray Buttes' on Mars
09.19.2016 Ribbon Cutting
09.09.2016 Farewell to Murray Buttes (Image 5)
09.09.2016 Farewell to Murray Buttes (Image 4)
09.09.2016 Farewell to Murray Buttes (Image 3)
09.09.2016 Farewell to Murray Buttes (Image 2)
09.09.2016 Farewell to Murray Buttes (Image 1)
08.26.2016 Out-of-this-World Records
08.04.2016 Mars Rover Is New Social Media Game
08.04.2016 Mars Rover Social Media Game
08.02.2016 Artist Concept for RIMFAX
07.20.2016 Viking 40 Year Anniversary Artwork: Medal
07.18.2016 Mars 2020 Range Trigger
07.14.2016 NASA to Launch Mars Rover in 2020
Martian Sandstone Target "Windjana" Before and After BrushingThis 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. The brushed area is about 2.5 inches (6 centimeters) across. Both images were taken by the Mars Hand Lens Imager (MAHLI) camera on Curiosity's arm during the 612th Martian day, or sol, of the rover's work on Mars (April 26, 2014).
This rock target is called "Windjana," after a gorge in Western Australia. The brushing reveals a grey color, in contrast to redder dust coating. The rock's texture is fine-grained sandstone.
Curiosity's drill collects powdered sample material from the interior of a target rock. The rover delivers portions of the sample to analytical laboratory instruments onboard. The only two rocks previously drilled by Curiosity, "John Klein" and "Cumberland," are even finer-grained mudstone. Those two targets, examined in 2013, provided evidence of a lakebed environment from billions of years ago, with conditions favorable for microbial life.
Curiosity's Dust Removal Tool was built by Honeybee Robotics, New York. MAHLI was built by Malin Space Science Systems, San Diego. Both the brush and the camera can be seen in a photo of the turret at the end of Curiosity's arm, at http://photojournal.jpl.nasa.gov/catalog/PIA18088.
NASA's Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, manages the Mars Science Laboratory Project for the NASA Science Mission Directorate, Washington. JPL designed and built the project's Curiosity rover.
Image Credit: NASA/JPL-Caltech/MSSS