Infamous asteroid Apophis 'rediscovered' as scientists test asteroid defense mechanisms - Space.com

The asteroid, which was once thought to be a risk to Earth in 2029, was the perfect test subject during its recent close approach.

An artist's impression of a potentially hazardous asteroid passing close to Earth. (Image credit: Juan Gartner via Getty Images) A test of whether asteroid defense systems could spot a potentially h… [+5371 chars]

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