NASA spacecraft DART crashes into asteroid in first Earth defence test
Image Credit: mashable
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 9.6 million kilometers away, with the spacecraft named Dart plowing into the small space rock at 22,500 kph. Scientists expected the impact to carve out a crater, hurl streams of rocks and dirt into space.