NASA's Spectro-Photometer for the History of the Universe, Epoch of Reionization and Ices Explorer (SPHEREx) was built for ...

What does a body belonging to some other star system tell us when the rays of the sun begin heating it on the outside? An unusually readable answer was provided by the interstellar comet 3I/ATLAS when ...

An interstellar comet can seem to be silent when it is the hottest and so at the same instant it will suddenly unleash its ...

NASA's SPHEREx space telescope detected organic molecules coming off comet 3I/ATLAS as the interstellar visitor made its closest approach to Earth in December.

Is 3I/ATLAS just a comet — or an intergalactic ark? A NASA spacecraft has discovered organic chemicals on 3I/ATLAS, which ...

Comet 3I/ATLAS was full-on erupting into space in December 2025, after its close flyby of the sun, causing it to significantly brighten. Even water ice was quickly sublimating into gas in ...

A NASA space telescope on a mission to map millions of galaxies has turned on its detectors for the first time, capturing images of tens of thousands of stars and galaxies. The SPHEREx, which is short ...

New infrared observations reveal that the rare interstellar visitor known as comet 3I/ATLAS has dramatically brightened ...

NASA's SPHEREx telescope captured a significant outburst from interstellar comet 3I/ATLAS, revealing unique chemical insights into extraterrestrial material.

SPHEREx detected a mix of molecules streaming off the comet, including water ice, carbon dioxide, and rocky material.

A new NASA observatory launched into space Tuesday on a mission that could help scientists unravel what happened in the first fractions of a second after the Big Bang. The SPHEREx mission (short for ...

NASA’s SPHEREx mission observed infrared emissions from interstellar comet 3I/ATLAS, documenting changes in dust, gas, and ...