Earth is near the center of a tangled mass of potentially hazardous asteroids. But there's little to worry about.
A fascinating NASA presentation suggests that in July 2012 Earth was one week away from being struck by a massive solar storm that would have had devastating effects. Can this be?
Scientists have been wringing their hands over the possibility of asteroid Apophis crashing into the planet, but new data from a distant flyby diminishes the chances of an Earth impact.
In an effort to avoid a potential apocalypse, the space agency is holding a contest to get people to help it discover deadly asteroids.
The space agency says the achievement is like "a person aiming a laser pointer at the end of a human hair 30 feet away and keeping it there while walking."
A user posts a fake news piece to CNN's iReport news hub. It stays live for 22 hours before someone realizes it must surely not be true.
NASA's Earth Day promotion resulted in 36,422 images used to create an amazing mosaic of Planet Earth. You have to see it to believe it.
The eighth spacecraft in a four-decade-long program to monitor the planet's surface is successfully boosted into orbit, kicking off an $855 million mission.
Celebrating Earth Day? NASA suggests you snap a selfie outside, in a chair, or up in the air to celebrate all that nature has to offer.
NASA has released stunning new high-resolution imagery of the Earth at night, called the Black Marble.