NASA @NASA
Our #DARTMission will crash into a non-threatening asteroid to change its motion. But to hit the mark, this test mission needs to locate its target on its own. That's why @JHUAPL's Michelle Chen helped develop new navigation tools to ensure a bullseye: https://t.co/TJn4hq8QKW https://t.co/xwUFuTE569 — PolitiTweet.org