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

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

If the government confirms nonhuman intelligence, psychological research offers clues about the range of ways humans might ...

The U.S. relied on dozens of aircraft, hundreds of personnel, secret CIA technology and subterfuge to rescue a two-man F-15E ...

NASA's Artemis II astronauts are now more than halfway to the moon, marking a major milestone in the first crewed deep-space ...