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Nasa Announces Asteroid Grand Challenge

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1998 QE2 asteroid

A sequence of radar images of 1998 QE2, a 1.7-mile wide asteroid, was obtained on the evening of May 29, 2013, by NASA scientists using the Deep Space Network antenna at Goldstone, Calif., when it was about 3.75 million miles (6 million kilometers) from Earth.

Credit: NASA/JPL-Caltech/GSSR

NASA announced Tuesday a Grand Challenge focused on finding all asteroid threats to human populations and knowing what to do about them.

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