News and updates about Comet

Watch: Rare comet seen from Earth for first time since Stone Age

The 'Green Comet' has an intense green hue resulting from the sun's rays and was last seen when the 'world's population fit into Cleveland.'

Watch: Rare comet seen from Earth for first time since Stone Age

NASA scientist warns of 'extinction-level' asteroid strike

NASA scientist warns that Earth is due for an 'extinction-level' event like a comet or asteroid strike and 'we won't be able to stop it.'

NASA scientist warns of 'extinction-level' asteroid strike

Watch: First Images from Historic Comet Landing

After 15 years, 4 billion miles and several hours of nail-biting tension, ESA's robot lander makes history with first-ever comet landing.

Watch: First Images from Historic Comet Landing

One-of-a-Kind Meteorite Shower Expected Overnight Friday

Stargazers can expect to see up to 200 meteorites per hour, experts say. Find out when here.

One-of-a-Kind Meteorite Shower Expected Overnight Friday