The interstellar comet will pass safely by Earth, giving astronomers their best chance to study it up close. Interstellar ...

On July 1st, 2025, the third interstellar object (ISO) ever detected was seen making its way through our solar system.

In a Sunday afternoon email announcing the one-day Amazon Leo 4 mission postponement, ULA officials said "teams are actively ...

Discovered over the summer, the comet known as 3I/Atlas will pass within 167 million miles of our planet on Friday. That's as ...

Discovered on July 1 by the NASA-funded ATLAS telescope in Chile, 3I/ATLAS is only the third confirmed visitor from another ...

The European Space Agency's X-ray space observatory XMM-Newton observed interstellar comet 3I/ATLAS on 3 December for around ...

In the spirit of the season, the interstellar comet 3I/ATLAS is changing color as it leaves the sun behind — shifting from a ...

Interstellar Comet 3I/ATLAS makes its closest, safe approach to Earth on Dec. 19. Learn how this rare visitor reveals secrets ...

He cited the astronomical gaffe in January, when The Minor Planet Center in Cambridge, Mass., announced the discovery of an ...

Astronomers have followed 3I/ATLAS since its discovery on July 1. Hubble photographed it on July 21 from 277 million miles away, revealing a teardrop-shaped cloud of dust wrapped around its icy core.

I/ATLAS comet is the 3rd-ever object discovered that originated from outside our solar system. It's not a threat, approaches ...

A mysterious interstellar comet known as 3I/ATLAS is about to make its closest approach to Earth in December 2025. Here's ...