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

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 ...

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 ...

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 ...

Comets usually fade quietly once they swing past the Sun. Interstellar comet 3I/ATLAS did not follow the same path. Instead, as it began to exit the solar system, it flared up dramatically. NASA’s ...

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

NASA’s SPHEREx space telescope has completed its first infrared map of the entire sky in 102 colors using observations made between May and December 2025. NASA’s SPHEREx space telescope — launched in ...

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

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

NASA's infrared telescope SPHEREx captured stunning images of interstellar comet 3I/ATLAS as it exited the solar system.