On Dec. 18, just 24 hours before its closest approach, the Green Bank Telescope scanned frequencies from 1 to 12 GHz. Their ...

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

Astronomers thought they had seen the "first hints of life on an alien world" this year, but they disappeared under closer ...

For only the second time ever, a collision between two asteroids has been observed around an alien star not too far beyond ...

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 ...

Researchers at University of Tsukuba have, for the first time, recorded the songs of the Chinese hwamei Garrulax canorus ...

On Friday, interstellar comet 3I/ATLAS makes its nearest approach to Earth. Here's what you need to know, and how to track ...

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 ...

The popular interstellar comet 3I/ATLAS made its closest approach to Earth on December 19, 2025, and is now moving away ...

Today is one astronomers, stargazers and alien conspiracy theorists have been waiting for: interstellar comet 3I/ATLAS is as ...

By chance, NASA Europa Clipper captured interstellar comet 3I/ATLAS in ultraviolet light as it sped past Earth, revealing hidden gases and offering a rare preview before its Jupiter encounter ahead.

NASA's alien-hunting Europa Clipper spacecraft took seven hours of ultraviolet observations of interstellar comet 3I/ATLAS while both objects zoom toward Jupiter.