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 ...

Watch how Comet C/2024 S1 (ATLAS) met its demise after traveling close to the sun. Imagers aboard the Solar and Heliospheric ...

In this image released by NASA, Comet Neowise, left, is seen in the eastern horizon above Earth in this image taken from the International Space Station on Sunday, July 5, 2020.

KENNEDY SPACE CENTER — Citing the proposed budget cuts by the Trump administration, NASA announced on Friday that after the Artemis III mission — where Americans will return to the moon ...

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