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

(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 ...

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

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

A strange purple object aboard the ISS sparked alien fears online, but NASA revealed it was a potato experiment. It shows how ...

The third known visitor from another star system, Comet 3I/ATLAS, has been racing through the Solar System with just enough weirdness to ignite a familiar debate: is it natural or could it be ...

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

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

These movies are the pinnacle of 70s sci-fi and the hard science fiction subgenre - priortizing scientific accuracy over ...