Initial reports of phosphine on Venus spurred chatter about biosignatures and evidence of potential life on Earth's much hotter sister planet. However, follow-up studies by other scientists couldn't ...

The colours of microbes that live in clouds high in the sky have been measured for the first time, giving scientists clues that could help us find life on other planets. A diverse range of ...

When astronomers search for planets that could host liquid water on their surface, they start by looking at a star's habitable zone. Water is a key ingredient for life, and on a planet too close to ...