[/caption] Caption: Opportunity leaves a mark on the Marquette Island rock on Mars. Credit: NASA/JPL/U of AZ, colorization by Stuart Atkinson The Opportunity Mars rover has been sitting by a rock called Marquette Island since early November 2009. The stay has given the rover a bit of a respite from the “pedal to the metal” … Continue reading "Opportunity’s Vacation at Marquette Island"