Bam! NASA spacecraft crashes into asteroid in defense test | Watch

A NASA spacecraft rammed an asteroid at blistering speed Monday in an unprecedented dress rehearsal for the day a killer rock menaces Earth. The galactic grand slam occurred at a harmless asteroid 7 million miles (9.6 million kilometers) away, with the spacecraft named Dart plowing into the small space rock at 14,000 mph (22,500 kph). “No, this is not a movie plot,” NASA Administrator Bill Nelson tweeted earlier in the day. ”