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

Erik Aadahl, the sound designer behind “Project Hail Mary” and 2014’s “Godzilla,” uses his background in biology to bring characters to life.

(cokada/iStock/Getty Images) Alien megastructures built to harvest stellar energy or alter the orbits of stars may be ...

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’ ...

A strange purple object aboard the ISS sparked alien fears online, but NASA revealed it was a potato experiment. It shows how microgravity can turn ordinary plants into bizarre shapes.

A video, now viral on the social media, shows a bright object slowly falling from the sky over Indonesia, triggering claims ...

Renowned science fiction creator Ridley Scott helmed an 18-episode series that served as the perfect sequel to his ...

Trump has ordered a UFO data release. But if aliens exist, what would they think of us? - For generations, human beings have ...

Debunking alien claims matters, but so does telling richer, more compelling stories about how humans shaped their own past.

A strange, tentacled object that went viral online was revealed to be a space-grown purple potato. Astronaut Don Pettit ...