Astrobiologists in Germany are developing a new testing device that could help tease dormant alien microbes into revealing themselves — and its key ingredient is a common amino acid that’s found in ...

Earth is often called “the Pale Blue Dot” thanks to its bountiful oceans, but most of the planet’s land masses are actually dominated by the color green. Plants use chlorophyll (which absorbs red and ...

A provocative study suggests that Jupiter’s frozen moon Europa may not only be hospitable, but that life from Earth could be ...