08.09.2017 Clouds Sailing Overhead on Mars, Enhanced
08.09.2017 Clouds Sailing Overhead on Mars, Unenhanced
07.20.2017 Panorama Above 'Perseverance Valley' on Mars
07.20.2017 Compass and Scale Image for Phobos and Mars
07.20.2017 Phobos in Orbit around Mars
07.11.2017 'Nathan Bridges Dune' on a Martian Mountain
07.11.2017 'Ireson Hill' on Mount Sharp, Mars
07.11.2017 Mars 2020 CacheCam Sample Tube
06.29.2017 Traction control testing
06.21.2017 A.I. laser targeting
06.01.2017 Diagram of Lake Stratification on Mars
06.01.2017 Mars Reconnaissance Orbiter By the Numbers
05.23.2017 Testing Mars 2020's Engineering Cameras
05.22.2017 NASA's Mars 2020 Rover Artist's Concept #1
05.15.2017 Putting Martian 'Tribulation' Behind
05.15.2017 From 'Tribulation' to 'Perseverance' on Mars
03.30.2017 Measuring Mars' Atmosphere Loss
03.29.2017 Lifetime Achievement Award to Theisinger
03.29.2017 A Decade of Compiling the Sharpest Mars Map
03.21.2017 Break in Raised Tread on Curiosity Wheel
03.17.2017 COBALT/JPL team
03.09.2017 Back-to-Back Martian Dust Storms
02.27.2017 Swirling Dust in Gale Crater, Mars, Sol 1613
02.27.2017 Dust Devil Passes Near Martian Sand Dune
02.27.2017 Sand Moving Under Curiosity, One Day to Next
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
Marks of Laser Exam on Martian SoilThe Chemistry and Camera (ChemCam) instrument on NASA's Mars rover Curiosity used its laser to examine side-by-side points in a target patch of soil, leaving the marks apparent in this before-and-after comparison.
The two images were taken by ChemCam's Remote Micro-Imager from a distance of about 11.5 feet (3.5 meters). The diameter of the circular field of view is about 3.1 inches (7.9 centimeters).
Researchers used ChemCam to study this soil target, named "Beechey," during the 19th Martian day, or sol, of Curiosity's mission (Aug. 25, 2012). The observation mode, called a five-by-one raster, is a way to investigate chemical variability at short scale on rock or soil targets. For the Beechey study, each point received 50 shots of the instrument's laser. The points on the target were studied in sequence left to right. Each shot delivers more than a million watts of power for about five one-billionths of a second. The energy from the laser excites atoms in the target into a glowing state, and the instrument records the spectra of the resulting glow to identify what chemical elements are present in the target.
The holes seen here have widths of about 0.08 inch to 0.16 inch (2 to 4 millimeters), much larger than the size of the laser spot (0.017 inch or 0.43 millimeter at this distance). This demonstrates the power of the laser to evacuate dust and small unconsolidated grains. A preliminary analysis of the spectra recorded during this raster study show that the first laser shots look alike for each of the five points, but then variability is seen from shot to shot in a given point and from point to point.
ChemCam was developed, built and tested by the U.S. Department of Energy's Los Alamos National Laboratory in partnership with scientists and engineers funded by France's national space agency, Centre National d'Etudes Spatiales (CNES) and research agency, Centre National de la Recherche Scientifique (CNRS).
NASA's Jet Propulsion Laboratory, a division of the California Institute of Technology, Pasadena, manages the Mars Science Laboratory Project, including Curiosity, for NASA's Science Mission Directorate, Washington. JPL designed and built the rover.
Image Credit: NASA/JPL-Caltech/LANL/ CNES/IRAP/LPGN/CNRS