Earth lives in a shooting gallery, with small and large rocky bodies in abundance in our solar system. Are we in danger of ...

By late October, on-board cameras will reveal the asteroid’s shape. In November, it’s expected Bennu will appear large enough for its craters and boulders to be visible to onboard cameras.

Astronomers estimate that an asteroid this large comes this close to Earth only about once every 7,500 years. It also appears to be a stony, non-metallic type of asteroid known as an ordinary ...

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I knew that the engineering team leaned toward an overabundance of caution: They didn’t want the asteroid’s rugged ... us beyond a reasonable doubt that Bennu’s surface was smooth—covered with a ...