NASA's Spectro-Photometer for the History of the Universe, Epoch of Reionization and Ices Explorer (SPHEREx) was built for the ambitious purpose of performing an all-sky survey. The data it collects ...

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

For millions of years, a frozen wanderer drifted between the stars before slipping into our solar system as 3I/ATLAS—only the ...

Comet 3I/ATLAS is not just another icy visitor cutting across the night sky. As it hurtles through the inner solar system, ...

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

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

NASA observes interstellar comet 3I/ATLAS unexpectedly flaring as it leaves the solar system, revealing water vapour and ...

Interstellar comets are the original cosmic explorers, and by studying their metallic whispers, we are learning the secrets of worlds we may never see directly.

The interstellar visitor may still have a few things to tell us before it leaves our solar system.

NASA’s SPHEREx telescope spotted interstellar visitor comet 3I/ATLAS flaring up while exiting the solar system. Scientists explain what caused it.

A team of astronomers found no radio signals from the comet that would suggest it is an extraterrestrial spaceship. The comet was confirmed in July 2025 as the third known object to enter our solar ...