Mundane wayward space rock, or extraterrestrial visitor? Astronomers believe that our solar system's latest and only third ...

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

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, […] ...

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

Interstellar comet 3I/ATLAS shines in the sharpest view yet captured by the Hubble Space Telescope, helping astronomers determine the object’s size.

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 ...

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

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

3I/ATLAS was discovered by NASA's Asteroid Terrestrial-impact Last Alert System (ATLAS) on 1 July, and is just the third ...

NASA’s Hubble Space Telescope has captured the sharpest-ever view of the interstellar comet 3I/ATLAS, revealing clues about ...