Interstellar object 3I/ATLAS shows unexpected frontal glow that Harvard's Avi Loeb says cannot be explained by sunlight reflection or standard cometary outgassing.

Last month, astronomers made an exciting discovery, observing an interstellar object — only the third of its kind ever ...

A Harvard scientist has suggested that an interstellar object passing through the solar system might be a nuclear-powered alien spaceship. Most astronomers believe the object, dubbed 3I/ATLAS, […] ...

In the past decade, astronomers have witnessed three interstellar objects (ISOs) passing through the solar system. These ...

A new image has revealed the clearest glimpse yet of an interstellar visitor zipping through our solar system. Video above: ...

A strange object hurdling through our solar system from interstellar space may, according to one of academia's most ...

Interstellar object 3I/ATLAS — which is zooming through our inner solar system — appears to be emitting its own light, ...

Is it an alien spaceship or an ancient comet? That’s the question puzzling UFO enthusiasts, NASA, and the European Space ...

A Harvard astronomer is suggesting that an interstellar object nearing Earth could be an engineered object — rather than a ...

U-M astronomers are helping study a fast-moving, ancient, and massive comet that formed beyond our galaxy. A group of ...

NASA has shared new details about 3I/ATLAS. It is an interstellar object moving at 209,000 km/h. Hubble images show it is ...

Astronomers on Wednesday confirmed the discovery of an interstellar object racing through our Solar System -- only the third ever spotted, though scientists suspect many more may slip past unnoticed.