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What are These?
September 16, 2012 | NASA

These spheres are about three millimeters in diameter and were found on the surface of a rock on Mars by NASA’s Mars Exploration Rover Opportunity.


  Related Stories

Mars Opportunity Rover is Moving Again
May 28, 2012 | NASA
NASA's durable Mars Exploration Rover Opportunity has driven off the sunward-tilted outcrop, called Greeley Haven,...

Mars Drilling Site
April 11, 2013 | NASA
"This image shows the first holes into rock drilled by NASA's Mars rover Curiosity, with...

Curiosity Rover about to Land on Mars
August 5, 2012 | NASA
NASA's Mars Curiosity rover has been transported for over 8 months and 350 million miles....

Second Drill Site on Mars
May 10, 2013 | NASA
"The team operating NASA's Curiosity Mars rover has selected a second target rock for drilling...

Fingerprinting Martian Minerals
October 30, 2012 | NASA
"NASA's Mars rover Curiosity has completed initial experiments showing the mineralogy of Martian soil is...

Curiosity Confirms First Mars Drill Sample
February 24, 2013 | NASA
"NASA's Mars rover Curiosity has relayed new images that confirm it has successfully obtained the...

Analysis of Martian Soil
October 7, 2012 | NASA
"NASA's Curiosity rover is in a position on Mars where scientists and engineers can begin...

Mars Was Habitable
March 12, 2013 | NASA
"An analysis of a rock sample collected by NASA's Curiosity rover shows ancient Mars could...


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