Star Wars used to be the end-all, be-all in space sci-fi, but in the years since the original trilogy, others have rushed in ...

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’ ...

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.

Alien megastructures built to harvest stellar energy or alter the orbits of stars may be physically feasible, according to a ...

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

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, ...

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

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

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 ...

NASA has confirmed the detection of a colossal interstellar comet measuring up to 20 kilometers across as it speeds through ...

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 ...