03.09.2017 Back-to-Back Martian Dust Storms
02.08.2017 Mars Reconnaissance Orbiter Observes Changes
01.25.2017 'Wing' Dike of Hardened Lava in New Mexico
01.25.2017 Blade-Like Martian Walls Outline Polygons
01.06.2017 Earth and Its Moon, as Seen From Mars
11.15.2016 Schiaparelli Impact Site on Mars, Stereo
11.03.2016 Schiaparelli Impact Site on Mars, in Color
03.30.2016 Erisa Hines
03.30.2016 Buzz Aldrin
03.21.2016 For a Decade Orbiting Mars: One Recent View
03.09.2016 For a Decade Orbiting Mars: One Recent View
03.09.2016 Mars Reconnaissance Orbiter By the Numbers
03.01.2016 MRO sees Frosty Spring Slopes
02.12.2016 Women in Science
02.10.2016 Wind at Work
11.16.2015 Change Observed in Martian Sand Dune
10.05.2015 'The Martian' Story's Ares 4 Landing Site
10.05.2015 The Ares 3 Landing Site (Figure A)
09.30.2015 Avalanche Ho!
06.29.2015 Mars Exploration Zone Layout Considerations
06.17.2015 Active High-Latitude Dune Gullies
06.03.2015 Crisp Crater in Sirenum Fossae
05.20.2015 Sedimentary Rock Layers on a Crater Floor
05.20.2015 Honey, I Shrunk the Mesas
05.11.2015 Icy Wonderland
05.04.2015 Diverse Orbits Around Mars
03.27.2015 South Pole Spiders
03.27.2015 A Smile a Day....
03.25.2015 Pitted Landforms in Southern Hellas Planitia
03.12.2015 Curiosity Heading Away from 'Pahrump Hills'
02.18.2015 Lava Flow Near the Base of Olympus Mons
02.09.2015 Yardangs in Arsinoes Chaos, Mars
02.04.2015 Curiosity Rover at 'Pahrump Hills'
01.22.2015 Frost on Crater Slope
01.16.2015 Components of Beagle 2 Flight System on Mars
12.03.2014 An Enigmatic Feature in Athabasca Lava Flows
12.02.2014 NASA's Journey to Mars
Before-and-After Views Confirm Fresh CratersThese images from the Context Camera (CTX) on NASA's Mars Reconnaissance Orbiter were taken before (left) and after (right) an apparent impact scar appeared in the area in March 2012 and was detected in images from the orbiter's Mars Color Imager (MARCI). Comparing the Jan. 16, 2012, image on the left with the April 6, 2014, image on the right confirms that two adjacent fresh craters appeared during that interval.
Each of these two images covers an area about 1 mile (1.6 kilometers) across. The craters are within the inscribed rectangle of the "after" image. The larger of the two craters is 159 feet (48.5 meters) wide, making it the biggest fresh crater ever clearly confirmed with before-and-after images, on Mars or anywhere else. Follow-up observations with the same orbiter's High Resolution Imaging Science Experiment (HiRISE) camera (see http://mars.nasa.gov/mro/multimedia/images/?ImageID=6257) reveal additional details of the impact site, including the presence of many smaller craters.
These excerpts from larger CTX images are centered at 3.34 degrees north latitude, 219.38 degrees east longitude. The "after" one is part of a larger image, showing the darkened scar area, at http://mars.nasa.gov/mro/multimedia/images/?ImageID=6260 .
Many of the approximately 400 fresh impact craters on Mars that have been confirmed with before-and-after images were first seen as dark scars detected in CTX images and then confirmed to have craters within the scars when follow-up observations were made with the High Resolution Imaging Science Experiment (HiRISE) camera. This impact is the only one, so far, big enough for the scar to be first detected in MARCI images (see http://mars.nasa.gov/mro/multimedia/images/?ImageID=6256), with follow-up confirmation of a crater by CTX.
CTX is one of six instruments on NASA's Mars Reconnaissance Orbiter. The camera was built by and is operated by Malin Space Science Systems, San Diego. NASA's Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, manages the Mars Reconnaissance Orbiter Project for NASA's Science Mission Directorate, Washington.
Image Credit: NASA/JPL-Caltech/MSSS