Space.com on MSN

The most exciting exoplanet discoveries of 2025

In 2025, astronomers sharpened their view of the planetary system around Proxima Centauri — the sun's closest stellar ...

8 burning theories that could prove 3I/ATLAS is an alien spacecraft, according to Harvard scientist

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

Here’s where NASA is looking for alien life in our solar system

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

Flat Earth, spirits and conspiracy theories — experience can shape even extraordinary beliefs

The answer is as obvious as it seems – the Earth looks flat when you're standing on it, not cone-shaped. Visual evidence ...