An asteroid known as Apophis, which is about 1,000 feet wide and has the potential to wipe a nation off the face of the planet in a direct hit, is expected to come within 20,000 miles of Earth in 2029. Efforts are under way to attempt to mine asteroids for minerals - a project th...
If a meteor similar to the one that hit in Russia was on a path toward New York, we might be lucky to get even three weeks' warning, NASA's Charles Bolden Jr. says at a House Committee hearing.