An object older than the solar system is crossing familiar planetary territory, and spacecraft built for entirely different missions are turning into a makeshift deep-space observatory to study it.

Interstellar objects move too fast and arrive too rarely for astronomy to rely on a single instrument or a single kind of light. When comet 3I/ATLAS was first reported on July 1, 2025, observatories ...

A visitor from another star system is creating excitement in the astronomy community. The comet 3I/ATLAS which was first spotted in July 2025 contains chemical clues that scientists can use to ...

Astronomers using ALMA have found large quantities of methanol in comet 3I/ATLAS, making it one of the most alcohol-rich ...

"The sun may not have arrived in a life-friendly environment purely by chance." When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Breaking space ...

New SETI research suggests space weather like solar winds could be interfering with alien radio signals, making them harder to detect.

Lead researcher Nathan Roth said the image shows the comet is “bursting with methanol in a way we just don’t usually see.” ...

Harvard astrophysicist Avi Loeb says interstellar comet 3I/ATLAS likely comes from the Milky Way's disc, as astronomers ...