NASA spacecraft narrows in on an asteroid for a head-on collision
In an unprecedented rehearsal, NASA’s spacecraft closed in fast on an asteroid Monday. The galactic grand smash was to take place at a harmless asteroid 7,000,000 miles (9.6 million kilometers) away. Dart, a Dart spacecraft, will drive into the rock at 14,000mph (22,500 km/h). Scientists anticipated that the impact would create a crater, hurl rocks … Read more