The Economist @TheEconomist
“If one day we discover an asteroid that’s on course to hit the Earth, the DART mission demonstrates a way to make the asteroid miss the Earth.” Andrew Cheng of @JHUAPL explains why NASA’s DART mission could protect lives in the future. Listen to “Babbage” https://t.co/wkKUDkCVD1 https://t.co/KGKv11FF8C — PolitiTweet.org