Star Trek is packed with all sorts of alien, both on the Enterprise and throughout the final frontier, and these are the ...

During a recent televised interview, NASA Administrator Jared Isaacman said the chances of discovering extraterrestrial life ...

Humans have wondered for centuries whether we are alone in the universe — and a new study suggests that if alien ...

The ExoLife Finder (ELF) looks like no telescope ever built. A spectacular crown of 15 five-meter mirrors perches atop a ...

In these science fiction books, extraterrestrial beings are sympathetic, horrifying and everything in between.

Scientists have uncovered a surprising way to study the harsh space weather around young M dwarf stars. Mysterious dips in starlight turned out to be massive rings of plasma swirling in the stars’ ...

This artistic illustration shows the TRAPPIST-1 red dwarf star system, home to seven Earth-sized exoplanets, several of which lie within the star’s habitable zone. In the foreground is TRAPPIST-1 b, ...

In 'Project Hail Mary,' a human and an alien figure out how to cooperate across space. In real life, we can't see that fellow ...

'Do all aliens really need sunlight?' ...

Finding life beyond our solar system goes beyond measuring an exoplanet's size, as rocky, Earth-sized worlds might not have ...

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 ...