Comet 3I/ATLAS is a rare visitor passing briefly through our solar system. Here’s how to find it in the night sky—and what ...

Comet 3I/ATLAS is the third known interstellar comet after 2017's 1I/'Oumuamua and 2019's 2I/Borisov. It was discovered on ...

Comet 3I/ATLAS, the third interstellar object ever detected, will swing closest to Earth overnight from Thursday to Friday ...

Only the third interstellar object recorded as visiting our solar system, 3I/ATLAS will be closest to the Earth on 19 ...

NASA's alien-hunting Europa Clipper spacecraft took seven hours of ultraviolet observations of interstellar comet 3I/ATLAS ...

Launched in March, NASA's SPHEREx space telescope has completed its first infrared map of the entire sky in 102 colors.

Interstellar comet 3I/ATLAS will make its closest approach to Earth on Friday. New X-ray images could shed light on its composition.

NASA's Hubble Space Telescope has gotten a rare peek at the aftermath of two cosmic collisions — and helped scientists solve a decades-old mystery. Many years ago, scientists saw a ...

As the interstellar comet 3I/ATLAS races toward its closest pass by our planet, astronomers are fixated on a peculiar feature ...

Comet 3I/ATLAS X-ray observations reveal hidden hydrogen and nitrogen, offering rare chemical insight into an interstellar ...

SpaceX's Starlink said one of its satellites experienced an anomaly in space on Wednesday that created a "small number" of ...

A lion and bear rescued from captivity in northern Albania arrived in animal sanctuaries in Germany in early December after ...