Narrow your search
Researchers have now spotted more than 90 percent of the so-called "planet buster" asteroids in nearby orbits and none poses a threat to Earth. But thousands of midsize bodies remain to be found.
Anomaly no more? Radio observatories in Australia and Puerto Rico have both now picked up brief bursts of radio waves from beyond our galaxy.
The B612 Foundation highlights the fact that asteroids come a-knockin' 3 to 10 times more frequently than previously thought. But don't freak out; most explode too high up to cause damage on the ground.
In an effort to avoid a potential apocalypse, the space agency is holding a contest to get people to help it discover deadly asteroids.
NASA camera snaps image of the potentially hazardous near-Earth object known as 1998 KN3 as it makes its way past the Orion Nebula.
Earth is near the center of a tangled mass of potentially hazardous asteroids. But there's little to worry about.
Fiscal 2014 budget also seeks to give the U.S. the capacity to again send American crews to the International Space Station, without having to rely on foreign nations' space programs.
With its small telescope, the Near-Earth Object Surveillance Satellite is looking for space rocks that could devastate our planet.
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.
Scientists estimate there are around 500,000 near-Earth asteroids the size of 2012 DA14, and less than 1 percent have been discovered.