Suppose there are signs of extraterrestrial life and we have not yet been able to detect them. What does that mean? In Nature Astronomy, researchers discuss the consequences of these so-called ...

This could be why we still haven’t found alien life - Traces left behind by organisms on alien worlds may be too subtle to ...

Astrobiologists are raising concerns that humanity’s search for alien life may be limited by the very tools designed to find it.

A new Nature Astronomy study warns that space missions are fixated on avoiding false alarms and may be quietly discarding real signs of alien life, arguing that AI will be vital for spotting subtle, ...