Astronomers have been keeping a close eye on an asteroid between 130 and 300 feet long that has a very small chance of crashing into Earth in 2032.

REx mission has an historic opportunity to closely observe the asteroid Apophis and improve our ability to defend against ...

Initial projections estimated a 1% chance of collision, but recent calculations have doubled those odds to 2.3%. Scientists admit, however, that much remains unknown about the asteroid's size and ...