The vast, silent expanse of our solar system has just played host to a visitor from the deepest reaches of the galaxy, and it ...

The long, quiet search for radio whispers from Comet 3I/ATLAS has finally paid off, and the result is as dramatic as the hype ...

A strange world just 47 light-years from Earth is rewriting what scientists thought they knew about alien planets. Hidden ...

Leading X-ray space telescopes XMM-Newton and XRISM have spotted a never-seen-before blast from a supermassive black hole. In ...

From Viking to Perseverance, scientists have spent decades chasing chemical hints that could point to life beyond Earth.

The agency will conduct a controlled experiment on a closed course to study the effects of warning devices to help determine ...

Border Patrol and ICE officers conducted two separate operations that led to the arrests of 87 alleged "illegal aliens" with ...

All the players who rocked our world, in the year of Oasis reunions, Black Sabbath farewells, and guitarists keeping their ...

From mudstones on Mars to strange gases in exoplanet atmospheres, tentative evidence for extraterrestrial life is starting to ...

Avi Loeb says interstellar objects such as 3I/ATLAS could carry time capsules into deep space faster than spacecraft built with 1970s technology ...

An instrument aboard NASA’s Europa Clipper spacecraft captured rare ultraviolet observations of an interstellar comet while Earth-based telescopes were blinded by the Sun. The spacecraft’s unique ...

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 you’ll need to catch a glimpse.