Comet Leonard, which last passed by Earth 80,000 years ago, has been dazzling the night sky before Christmas, and there's only a few days left to see the celestial object before it disappears forever.

In a pair of papers published in 2018 and 2021 in the Journal of Geophysical Research: Planets, planetary scientist Steve ...

But over the summer, 3I/ATLAS, has plunged toward the inner solar system—and the fireworks show has begun in earnest. When ...

NASA STEREO-A satellite's SECCHI/HI-2 camera captured this imagery of Comet C/2021 A1 (Leonard) Credit: Space.com | footage courtesy: NASA/NRL/B.Gallagher | edited by Steve Spaleta ...

Initially, it was classified as a comet, but the object's behavior and composition did not match any known comet models. What sets ‘Oumuamua apart is its high reflectivity, unusual elongated or ...

Nishimura, a newly discovered comet – green in color and about a half-mile in size – will reach its closest point to Earth on next week before racing around the sun and back out into space. Weather ...

Deep in the Stone Age, when Neanderthals still lived alongside Homo sapiens, our ancestors might have been agog at a green light in the night sky. Now, that light—C/2022 E3 (ZTF) (more familiarly, the ...

Prior to Comet C/2022 E3's initial sighting in January, the last time it was viewable from Earth was reportedly during the Upper Paleolithic or Old Stone Age Skyler Caruso is a Writer and Reporter of ...

Professional and amateur skywatchers are tracking a "green" comet zooming through space that could soon be visible to the naked eye from Earth. But why does this comet and others like it often appear ...