Alien experts claim powerful extraterrestrial life exists in the universe, which is beyond the control of any government — ...

Even as Hollywood still drives how Americans envision little green men with big eyes and bigger heads, fiction soon could be ...

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

The Kardashev Scale is one of the most widely discussed scientific frameworks for measuring the technological advancement of ...

An alien named Rocky, from 'Project Hail Mary,' captivated audiences despite lacking a face. His energetic personality, ...

Explore the UFO mysteries J. Allen Hynek uncovered with Project Blue Book and how his findings challenged the Air Force's ...

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

On April 11, 1960, astronomers began the first scientific experiment that would search for extraterrestrial life. Known as ...

Stacker compiled a list of the best space movies of all time, from "WALL-E" to "Star Wars," as determined by the Stacker score.

The science fiction blockbuster wowed audiences with its depiction of space travel and more. Here's what NASA staff and other ...

History loves a good trick. Before internet rumors and viral posts, elaborate hoaxes traveled through newspapers, museums, lecture halls, and radio waves.

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