Astronomers discovered that C/2014 UN271, a massive comet more than 10 times larger than any known comet, is emitting jets of ...

Comet Nishimura came into NASA's STEREO-A spacecraft's field of view. The solar wind was interacting with the tail of the comet in the footage. Credit: NASA/STEREO/Karl Battams | edited by Space.com's ...

A rare green comet is expected to pass by Earth this week and will be visible in the night sky for nearly a month, according to NASA. Comet C/2022 E3 (ZTF) will make its closest pass of Earth ...

Astronomers have spotted unusual molecular activity in the largest Oort Cloud comet, comet Bernardinelli-Bernstein (C/2014 ...

NASA map of Comet Tsuchinshan-ATLAS (C/2023 A3)'s path. The comet will reach its closest point to Earth on October 12, but may still disintegrate beforehand.

On June 30, 1908, a catastrophic explosion rocked the skies over Eastern Siberia, releasing an energy equivalent to 10–15 ...

NASA officials said the comet made its closest transit past the sun on Sept. 27 and is on track to come within approximately 44 million miles of Earth on Saturday.

Comet A3 has already grown a million times brighter since its discovery in January 2023. Don Pettit/NASA. NASA describes comets as "cosmic snowballs," made up of frozen gases, rock and dust. These ...

Some of these comets even come within a few thousand miles of the sun, according to NASA. Comet C/2023 A3 Tsuchinshan–ATLAS, a similar comet, has also been making its historic orbit around Earth ...

Comet E3 is set to pass by Earth at the end of this month, coming its closest to Earth on February 1. Until then, though, NASA has shared a spectacular E3 comet photo. This particular E3 comet ...