Green oceans on early Earth, shaped by iron, pushed microbes to evolve light-absorbing tools that worked in green light.

Is it possible to build a Dyson sphere that isn't catastrophically unstable? New research says yes, but only in one type of star system.

In an experiment simulating harsh Martian conditions, including X-ray radiation, scientists discovered that certain lichens ...

Seems unintuitive, but the mounting list of lifeless planets might be exactly what scientists need to figure out how common ...

A novel way to find aliens might be through gravitational wave detection, Loeb says. He is interested in laser interferometry ...

Gamma radiation turned Bruce Banner into the Hulk, but it's also made monsters out of a powerful array of aliens, robots and ...

What are some of the largest extraterrestrial impacts to effect Earth? Learn what we’ve seen in history, and what is ...