Thomas Mulligan examines the scientific challenge of defining and searching for non-Earth-like alien life forms that may not ...

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 very different kind of solar system that could harbor life-forms we haven ...

Tiny life forms adrift in alien skies might one day expose themselves through the faintest play of light. A new study suggests that airborne microbes could leave detectable spectral fingerprints in ...

Researchers have said that the next-generation telescopes and AI-driven data analysis will aid in detecting biosignatures.