NASA's asteroid chaser swings by Earth on way to space rock

CAPE CANAVERAL, Fla. (AP) " NASA's asteroid-chasing spacecraft is swinging by Earth on Friday on its way to a space rock.Launched a year ago, Osiris-Rex was on track to pass within about 11,000 miles (17,700 kilometers) of the home planet Friday afternoon " above Antarctica. It needs Earth's gravity as a slingshot to put it on a path toward the asteroid Bennu.Osiris-Rex should reach the small, roundish asteroid next year and, in 2020, collect some of its gravel for return to [...]


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