Sunday, January 02, 2011
UA camera finds giant Mars pits: openings to cave network?
The UA-run HiRISE camera on the Mars Reconnaissance Orbiter took images of unusual pits found in 2007 that might be openings to a cave network on the Red Planet. The latest photo, showing two pits, 180 and 310 meters across, was released just before the holidays.
at 6:36 PM