NASA's Mars Exploration Rover Opportunity has found a rock that apparently
is another meteorite, less than three weeks after driving away from a
larger meteorite that the rover examined for six weeks.
Opportunity used its navigation camera during the mission's 2,022nd
Martian day, or sol, (Oct. 1, 2009) to take this image of the apparent
meteorite dubbed "Shelter Island." The pitted rock is about 47 centimeter
(18.5 inches) long. Opportunity had driven 28.5 meters (94 feet) that sol
to approach the rock after it had been detected in images taken after a
drive two sols earlier.
Opportunity has driven about 700 meters (about 2,300 feet) since it
finished studying the meteorite called "Block Island" on Sept. 11, 2009.