New research suggests that many planets previously considered promising for life may, in fact, be far less hospitable. A ...

We have no idea what kind of life may exist on other planets, so it’s hard to know what to look for. Proxima Kósmos imagines ...

A faint blip on a telescope readout can set off a wave of excitement. Maybe it is a molecule tied to life. Maybe it is ...

In the Venus case, the potential clue was a faint spectral line in radio data, not a photograph of organisms in the clouds. One account of the controversy quotes Greaves describing the discovery as a ...