With these new findings, researchers are closer than ever to validating a key planetary defense technique.
Astronomers can usually spot "planet killer" asteroids long before they approach Earth. But what if they can't?
New research warns that if we don't hit an asteroid in exactly the right spot, it could end up on a collision course with Earth.
The freshly minted telescope discovered 2,000 previously unknown asteroids in just 10 hours. Weirdly, NASA doesn’t seem to care.
