06.21.2017 A.I. laser targeting
06.01.2017 Diagram of Lake Stratification on Mars
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
04.20.2017 Chemical Laptop Team
04.20.2017 Subcritical Water Extractor
04.20.2017 Chemical Laptop
04.20.2017 Atacama Landscape
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
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
Fresh Mars Crater Confirmed Within Impact ScarThis April 6, 2014, image from the Context Camera (CTX) on NASA's Mars Reconnaissance Orbiter was taken as a follow-up to discovery of a possible March 2012 impact scar in images from the orbiter's Mars Color Imager (MARCI). It reveals two craters within the darkened area (at center of the inscribed rectangle).
CTX has imaged most of Mars at least once, with resolution that reveals features smaller than a tennis court. The camera had imaged this same area in January 2012, before the scar-causing event detected in MARCI images. Comparison of that CTX "before" image with this "after" one confirmed that the two craters were not yet present in early 2012 (see http://mars.nasa.gov/mro/multimedia/images/?ImageID=6261).
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. The largest of several craters at this impact site is 159 feet (48.5 meters) wide, making it the biggest fresh impact crater ever clearly confirmed with before-and-after images, on Mars or anywhere else.
This image covers an area about 6 miles (10 kilometers) wide. The fresh craters are at 3.34 degrees north latitude, 219.38 degrees east longitude.
Figure 1 is version of the same image without the inscribed rectangle.
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