Apophis will travel closer to us than any similarly sized astronomical object in recorded history, scientists said. It will ...

Though the other space rock was much smaller than the asteroid that caused the mass extinction of dinosaurs, it was large ...

Europe's Hera probe is tentatively scheduled to launch Monday on a mission to inspect the damage a NASA spacecraft made when ...

New research suggests the asteroid that killed the dinosaurs came from beyond the outer Solar System, confirmed by rare ...