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

As the interstellar comet 3I/ATLAS sweeps through the inner solar system, it has become a magnet for both scientific ...

Nearly 4,000 m beneath the Pacific, in water so dark that sunlight has never penetrated, scientists have stumbled on a new ...

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