What to Expect If NASA’s DART Spacecraft Misses the Asteroid
NASA's DART spacecraft is on track to hit a non-threatening asteroid today at 7:14 p.m. ET, in what is an important demonstration of a planetary defense strategy. But space is hard, and DART, traveling at 15,000 miles per hour, could whiz past the 520-foot-wide object. Here's what would happen should that unlucky...