The ripples suggest that the lake was free of ice at one point.

So, if astrobiologists ever do find alien life with a weird chemistry that uses some liquid other than water, it's not likely ...

Astronomers have identified sulfur as a potentially crucial indicator in narrowing the search for life on other planets.

The James Webb Space Telescope has detected potential biosignatures on the exoplanet K2-18b, raising new excitement about the ...