This image of 'Block Island' was taken on July 28, 2009, with the front hazard-identification camera on NASA’s Mars Exploration Rover Opportunity.

This image of “Block Island” was taken on July 28, 2009, with the front hazard-identification camera on NASA’s Mars Exploration Rover Opportunity.

Scientists will be testing the rock with the particle X-ray spectrometer to get composition measurements and to confirm if indeed it is a meteorite.

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