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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
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03.09.2016 Mars Reconnaissance Orbiter By the Numbers
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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
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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
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12.02.2014 NASA's Journey to Mars
Impact Scar Detected in Mars Weathercam ImageThis image from the Mars Color Imager (MARCI) camera on NASA's Mars Reconnaissance Orbiter has a dark spot (at center of inscribed rectangle) noticed while the image was being examined for a weekly Mars weather report. This wide-angle camera provides daily global coverage of Mars for monitoring dust storms and other changes in weather. The image was taken March 20, 2014. Other observations confirmed that the dark spot is a scar from a space rock hitting Mars.
Detection of the dark spot in this image triggered a check of earlier MARCI images. The spot resembles fresh impact scars seen with other cameras. The check of earlier MARCI images confirmed that this spot resulted from an event that occurred in the interval between images taken during Martian afternoons on March 27, 2012, and March 28, 2012 (see http://mars.nasa.gov/mro/multimedia/images/?ImageID=6256). Mars orbiters have located about 400 fresh impacts on Mars that have been confirmed with before-and-after images. This is the only one to be detected in a MARCI image. MARCI's daily global imaging enabled determining the impact timing more precisely than in any other case.
This image covers an area about 1,000 miles (1,600 kilometers) wide. The dark spot confirmed to be an impact scar is about 5 miles (8 kilometers) across, at 3 degrees north latitude, 219 degrees east longitude.
Figure 1 is version of the same image without the inscribed rectangle.
Follow-up observations with two telescopic cameras on Mars Reconnaissance Orbiter revealed craters within this impact scar that had not been present in January 2012. The largest of these craters -- 159 feet (48.5 meters) wide -- is the biggest fresh impact crater ever clearly confirmed anywhere with before-and-after images.
MARCI 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