Clayton Chilcutt had never heard of a quasi-moon before his intro astronomy course at UGA. Then he won a worldwide contest to name one of Earth's curious celestial neighbors.

Issues delivered straight to your door "I expect Gaia's best results are still to come." ...

The first flight mission for planetary defense, NASA's Double Asteroid Redirection Test (DART) seeks to validate a method to ...

A massive asteroid, 2022 CE2, is set to make a close flyby of Earth on Thursday. The 370-foot asteroid will travel at an ...

Earth's moon might have once had stunning rings like Saturn, but simulations suggest solar radiation, gravity, and planetary ...

G3 (ATLAS) should be visible from the southern hemisphere, and possibly also the northern hemisphere, over the next few days ...

"it's not completely unusual for asteroids to be near the Earth," Gallagher said. "Our moon is about a quarter million miles ...

A massive asteroid, spanning more than two miles across, has just made its closest approach to Earth in decades - but its ...

Comet G3 ATLAS (C/2024) is expected to whiz past the Sun in mid-January, giving skywatchers an extremely rare opportunity to spot the space spectacle from Earth ...

Don’t space out or you’ll miss it. A once-in-a-generation asteroid broader than the width of Manhattan will be passing by the ...

An asteroid larger than Manhattan is flying close by Earth. The space rock - named (887) Alinda - is so large it should be ...

A large asteroid is about to make its closest approach to Earth in 100 years. Over the coming days, it's so close you should be able to observe it yourself with only the aid of binoculars.