A series of before-and-after images captured by NASA's Mars Reconnaissance Orbiter
reveal the largest fresh-impact crater ever documented in our solar system. Researchers think the impact that made the crater happened in the spring of 2012, when it first appeared in NASA images taken of Mars. Experts surmise that the impact followed an explosion in the sky when an asteroid entered Mars' atmosphere.
In this video made by NASA Jet Propulsion Laboratory, Deputy Project Scientist Leslie Tamppari with the Mars Reconnaissance Orbiter explains in full the sighting, before and after image comparison and documentation of the new crater.
Via IFL Science.