The solar system has many more moons than the one we can see in the sky. But how many do we actually know about? And how many ...

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

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. The Hubble ...

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, […] ...

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

Interstellar object 3I/ATLAS shows an unexpected frontal glow that Harvard's Avi Loeb says cannot be explained by sunlight ...

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

Scientists are exploring various proposals to repurpose existing spacecraft in order to chase after the interstellar object ...

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

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