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

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

Tantalising signs of past microbial life showed up on Mars this year, but to truly know whether they contain the answer to ...

Here are 10 major findings about human ancestors and our close ancient relatives that scientists announced in 2025. A handful ...