When 3I/ATLAS swept past the sun in late October 2025, it became only the third confirmed visitor from interstellar space ...

The vast, silent expanse of our solar system has just played host to a visitor from the deepest reaches of the galaxy, and it ...

Interstellar comet 3I/ATLAS showed measurable water activity after passing the Sun, observed by SOHO’s SWAN instrument, ...

I/ATLAS, the interstellar object discovered in 2025, reveals the estimated population, composition, and distribution of ...

I/ATLAS may have moved away from Earth as it makes its way out of the solar system, but this interstellar intruder continues ...

NASA’s Europa Clipper spacecraft has recorded important new observations of the interstellar comet 3I/ATLAS using its ...

The interstellar comet 3I/ATLAS is just days away from coming as close to Earth as it will ever get. Here's how you can track it and spot it.

A newly discovered object, 3I/ATLAS, is sparking debate among astronomers. Early data suggests it could be a remnant from the ...

The controversial Harvard astronomer is one of the main sources of the "alien mothership" hypothesis. This is what he thinks, ...

Last Friday, the interstellar comet designated 3I/ATLAS completed its closest approach to Earth without crashing into us or depositing an invading armada.

Interstellar Comet 3I/ATLAS makes its closest Earth pass early on Dec. 19. Here's what astronomers know about its origin and speed.