An unusually pristine piece of Mars
Thursday, October 11, 2012 - 21:30
in Astronomy & Space
The so-called Tissint meteorite, which landed in Morocco last year, is one of only five Martian rocks that have been spotted landing on Earth and retrieved for study.Blasted into space by a collision with an asteroid, the jagged hunk of Mars rock tumbled silently through the solar system for 7,000 centuries.