Spaceship chasing an asteroid slingshots past Earth

By Amanda Barnett, CNN Updated 2:59 PM ET, Fri September 22, 2017 (CNN)A spaceship sucessfully zipped by Earth on Friday and used our planet’s gravity to help it pick up speed on its way to explore an asteroid. NASA’s OSIRIS-REx flew about 11,000 miles (17,000 kilometers) above Antarctica at 12:52 p.m. ET. The maneuver, called an Earth gravity assist, pointed […]

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