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 ...

In the sci-fi book and now movie Project Hail Mary, astronaut Ryland Grace, played by Ryan Gosling, encounters three ...

Americans’ opinion of space exploration is pretty high.

NASA officials have previously spoken of the possibility of extraterrestrial life amid scientific uncertainty while ...

Comet 41P/Tuttle-Giacobini-Kresak has begun acting a little unusually, but there are likely natural explanations before we go ...

Searching for alien languages sheds light on how much human languages have in common—with each other and even with animal ...

Explore the fascinating science and alien life in 'Project Hail Mary,' highlighting Rocky and the star system 40 Eridani.

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

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

"It really bent your mind." The Artemis astronauts’ reflections echo a long described change that occurs when humans are ...

Before zombies shambled about, ghoulishly feasting on the flesh of those too slow to flee, aliens from outer space ruled ...