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

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

Alien solar systems that are home to so-called "hot Jupiters" — gas giants circling sizzlingly close to their stars — are unlikely homes for Earth-like planets, researchers say. Hot Jupiters get their ...