As it crossed our Solar System, the interstellar object 3I/ATLAS released up to the equivalent of 70 Olympic swimming pools ...

3I/ATLAS is now exiting our solar system at more than 137,000 miles per hour.

On July 1, 2025, astronomers caught sight of a mysterious object racing through the solar system. This object, now named 3I/ATLAS, became only the third known visitor from outside our planetary ...

Add Yahoo as a preferred source to see more of our stories on Google. This animation shows the observations of comet 3I/ATLAS when it was discovered on July 1, 2025. The NASA-funded ATLAS survey ...

Astronomers at the University of Michigan have found that the interstellar comet 3I/ATLAS contains water with a deuterium ...

Interstellar object 3I/ATLAS is on the opposite side of the sun from Earth - but several spacecraft are in the perfect position to get a closer look. As 3I/ATLAS warps and grows the closer it gets to ...

James is a published author with multiple pop-history and science books to his name. He specializes in history, space, strange science, and anything out of the ordinary.View full profile James is a ...

Space agencies around the globe have launched an unprecedented wave of planetary defense exercises, all centered on a mysterious interstellar visitor that refuses to behave like anything scientists ...

Interstellar object 3I/ATLAS — which is zooming through our inner solar system — appears to be emitting its own light, according to Harvard astrophysicist Avi Loeb. The observation by Loeb, if ...

An interstellar comet is drifting through the solar system, and it may be billions of years older than the sun. Credit: ESA / NASA / ESO / M. Kornmesser illustration A giant comet spotted days ago ...