August 14, 2014 Sophie Weiner

NASA’s aptly named Stardust spacecraft caught some particles from the comet Wild 2, which it delivered to Earth in 2006. The results of the dust’s analysis have now been published. Scientists have not been able to determine where in the universe these grains came from, but they do know that they are composed of a “magnesium-iron-silicate mineral called olivine, ” […]

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