With 3I/ATLAS streaking away from our planet, speculation remains as to whether the interstellar comet is alien or not.

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

Imagine peeling back miles of frozen white and revealing valleys, rivers, and mountains that haven't seen sunlight in tens of ...

Discover compelling UFO headlines from 2025, featuring new scientific evidence, mysterious underwater objects and government ...

There are places in the world that seem ordinary on a map but feel mysterious in the mind. Area 51 is one of those places. It sits in the Nevada desert, where the land is dry and empty, yet the ...

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

I/ATLAS has passed its closest point to Earth, meaning we will soon lose sight of it for good. Some scientists want to send a spacecraft to chase down the alien comet — or the next interstellar object ...

On Friday, December 19, 2025, comet 3I/ATLAS will make its closest approach to Earth. 3I/ATLAS can be found near the constellation Leo when it reaches its closest distance to Earth, overnight on ...

NPR's staff traveled a lot in 2025. From a Mardi Gras workshop to a festival celebrating the mythical Mothman, here are some ...

Hawaii’s Gemini North telescope has captured new images of interstellar comet 3I/ATLAS with a green glow as it remerges from ...

Hundreds of Auburn residents remain under evacuation orders as water levels continue to rise along the Green River.

The mysterious interstellar comet 3I/ATLAS is making its closest approach to Earth on Friday, offering scientists a rare ...