Scientists are stunned by HD 189733b, a blue planet 63 light-years away, resembling Earth but far more hostile. Orbiting its ...

The curious minds at What If explore what would happen if Voyager 1 crashed on an alien planet.

A new Keck Observatory study indicates that giant planets can spin faster than more massive brown dwarfs, revealing important ...

Planets orbiting stars beyond the solar system come in all shapes and sizes but mostly fit into a few categories: large and hot gas giants, super-Earths that are slightly larger than our planet, ...

Scientists are listening in on sperm whale conversations and studying Earth's strangest microbes to prepare humanity for first contact with extraterrestrial life.

You’ve probably heard the theory before – it’s that the octopus is not from earth. They’re aliens. They are so different from anything else on this planet, that they must have come from a different ...