NASA's Mars rover Opportunity may have spied its second meteorite on Mars. In January, 2005, soon after landing, it spotted a rock about half a mile from its landing site that turned out to be a meteorite-- a remarkable coincidence, if you think about it.
Last month, Opportunity's cameras imaged another possible meteorite. Currently, the rover is analyzing the rock's chemical composition to nail down whether it's a meteorite or not.
Opportunity has driven over 10 miles across Mars, but not all that distance has been straight away from its landing site, so the possibility exists that two meteorites from such a small area may be related-- may even be pieces of the same bigger object. Such a finding would be yet another remarkable coincidence.
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