Scientists have discovered seven more "dark comets," and analysis of this haul suggests that the puzzling planetoids are ...

The rocky bodies, which look like asteroids but act like comets, could comprise up to 60% of near-Earth objects.

A reanalysis of the data from the "rubber-ducky" comet 67P, collected nearly a decade ago, suggests comets may have deposited a lot more water on Earth than scientists previously thought.

How do you find a comet that could pose a threat to Earth but hasn't passed our planet in the last 200 years or more? You ...

One of the best meteor showers of the year is about to peak. Here's how to watch and where you can catch the Geminids.

Water. All life on Earth requires it in some way or another, and it's hard to miss that roughly 70% of our planet's surface ...

NASA has announced the discovery of seven astronomical objects that come in two flavors; they look like asteroids but ...

The water on Earth might have been delivered from space by comets billions of years ago - NASA scientists say Jupiter-family ...

NASA researchers have discovered seven new dark comets, asteroids that act like comets, and they say there could be even more ...

New research on Comet 67P indicates that its water may be similar to Earth's, contradicting earlier findings by Rosetta's ...

At least eight comets will be visible in the Northern Hemisphere in 2025. Here's where and when to look and which ones you ...

This new data reveals that not even all dark comets are the same: there are at least two different kinds. And, in turn, the discovery of multiple kinds of dark comets could tell us more about how ...