The data obtained by Webb had two things that took researchers by surprise.

NASA's James Webb Space Telescope is finding clues that are leading scientists toward the origins of the interstellar comet ...

Based on the composition of gases spewed by the icy space rock, researchers estimate that our guest might be up to 12 billion ...

NASA's James Webb Space Telescope found unusual isotopic signatures in interstellar comet 3I/ATLAS, suggesting it formed up ...

NASA reports star-sized jet on 3I/ATLAS; Harvard says it exploded ...

Hubble Space Telescope image of 3I/ATLAS. (NASA, ESA, David Jewitt/UCLA; Image Processing: Joseph DePasquale/STScI) All signs ...

An interstellar comet that blazed past the sun last year could be nearly three times older than our solar system and is ...

Researchers say 3I/ATLAS could be 12 billion years old and has a composition unlike anything in our solar system.

I/ATLAS whizzed past the solar system earlier this April (2026) after it was first spotted last year by the ATLAS observatory ...

The findings surprised researchers, who used the comet's composition to better understand the environment in which it formed.

3I/ATLAS is ready for its close-up. After much anticipation, NASA will release images of Manhattan-sized comet 3I/ATLAS — including the much-awaited HiRISE snaps — as it streaks through our solar ...

NASA has released a long-awaited collection of new photos of comet 3I/ATLAS, the interstellar visitor that has been making headlines since its discovery in July. Several NASA spacecraft snapped the ...