An object from another star has been seen entering the solar system at high speed, and is expected to whip around the sun in ...

It is only the third such object to have been identified as having an interstellar origin, which means it did not begin its ...

I/ATLAS, earlier known as A11pI3Z, is only the third interstellar visitor to be discovered passing through our corner of the ...

Astronomers are scrambling to gather data on a mysterious object that’s currently hurtling through the solar system.

Astrophysicist Josep Trigo-Rodriguez of the Institute of Space Sciences near Barcelona, Spain, believes it is an interstellar ...

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 ...

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

NASA observes largest Oort Cloud comet, C/2014 UN271, exploding with CO gas jets, thanks to ALMA’s deep-space capabilities.

NASA first developed aerogel for a mission unlike any other. In the late 1990s, the Stardust spacecraft was sent to fly through the tail of a comet and return with samples.

NASA caught images from the comet C/2024 G3 (ATLAS), making its closest pass to the sun on Jan. 13, NASA said, “Soaring a mere 9% the average Earth-sun distance from our star.” ...

NASA astronaut Don Pettit, flight engineer for the Expedition 72 crew, proved that when he witnessed Comet ATLAS from the International Space Station, orbiting 250 miles above Earth.

A bright comet could be visible in skies across the globe over the coming days for the first time in 160,000 years. Nasa said the future brightness of a comet is "notoriously hard" to predict, but ...