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

Pope worked in the U.K.'s Ministry of Defense for decades, covering a range of areas from defense policy to unidentified ...

To date, over 5000 exoplanets have been discovered using telescopes on the ground and in space. Credit: NASA/JPL-Caltech ...

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

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

Forget White Walkers, Peter Dinklage will soon have an even more terrifying creature to contend with in the second season of ...

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

Snaiad is one of the most unique alien worlds ever imagined. This video explores how life evolved there and why it looks so different from Earth. Every creature follows its own strange logic. It’s ...

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

What would alien life from another planet be like? But we rarely ask the opposite: What would they think of us? It’s a ...

In a 2019 AP-NORC poll, about half of Americans said they’d take a chance to orbit the Earth, with 41% saying they’d travel ...

TOI-4616 b is an Earth-sized exoplanet orbiting an M-dwarf that offers a strong benchmark for studying atmospheric loss and ...