What happens if alien contact stops being science fiction and becomes real? From mysterious interstellar objects to the possibility of signals, peaceful arrival, or outright attack, the deeper ...

When you're looking for signs of extraterrestrial intelligence, it helps to know what you're looking for and to go about it ...

The LHS 1903 system defies expectations with a rocky outer planet, prompting new ideas about how planets form and evolve.

Measurements of this interstellar comet’s molecular makeup show an excess of heavy water molecules that is dramatically ...

If an alien in the Alpha Centauri star system were craving pizza, it would take tens of thousands of years to deliver it ...

There is a silence in the night sky that has bothered me for as long as I can remember. ” That line, attributed to Richard ...

"Most planetary systems appear as 'peas in a pod.' This is not the case in the TOI-201 system." ...

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 ...

Aliens, Arrival, Nope, Predator, Lilo & Stitch, E.T. the Extra-Terrestrial, and more make up our list of the best alien ...

Astronomers have discovered the TOI-201 planetary system where planets are shifting their orbits in real time, a rare ...

Scientists have discovered unexpected water-ice clouds on a distant, Jupiter-like exoplanet, challenging current atmospheric ...

For generations of viewers, the original Star Trek has felt fully formed from the moment Captain Kirk first took command of ...