
NASA @NASA
Are we really crashing a spacecraft into an asteroid? We sure are — all in the name of planetary defense. The #DARTMission is a technology test to see if an impactor could change the trajectory of an asteroid. @JHUAPL's Nancy Chabot tells us more: https://t.co/hiAfCp3qrp https://t.co/UUbUmavTzj — PolitiTweet.org