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 look for its footprint.

The last time the comet came this close to Earth was during the Stone Age. On Thursday it’ll make its nearest approach to our planet.

They also found that locating comets that were billions of miles away and one day might potentially hit Earth gave experts years to do something about the incoming impact.

A large, rare comet known for its colorful outbursts is currently visible from Earth. The comet 12P/Pons-Brooks orbits the sun every 71 years, and has been classified as a non-hazardous "Near ...

A mysterious "devil comet" that looks like the Millennium Falcon will pass by Earth next spring An erupting comet sprouts what look like horns. Here's how to spot it in 2024 before it leaves for ...

Comet Nishimura will pass by the Earth once every 435 years as it makes its way toward the sun, and it could be visible the week of September 12.

Comets are icy leftovers from the formation of the solar system. Explore these 'dirty snowballs' in more detail with our ultimate comet guide.

New NASA research indicates that comet impacts may have contributed significantly to Earth's water supply.

A new study has raised warnings about "dark comets" which are hard to detect and could pose a terrible threat to Earth.

Asteroids vs. comets: How do they differ, and do they pose a threat to Earth? These chunky rocks and ice balls are the remnants of the formation of the universe. Here’s what you need to know ...

Comet C/2022 E3 was first spotted last year. Its path will bring it within 26 million miles of the Earth on Wednesday, allowing it to be visible to the naked eye for perhaps the last time ever.

Comet C/2022 E3 was first spotted last year. Its path will bring it within 26 million miles of the Earth on Wednesday, allowing it to be visible to the naked eye for perhaps the last time ever.