Sagan's team created the greatest puzzle of all time, which you can only solve if your species understands the basic nature ...

Claims have emerged that NASA pilots were told to destroy photos that may have contained images of UFOs, as other astronauts ...

Before Apollo 11’s “giant leap,” astronauts trained in Oregon’s lava fields. Newly surfaced footage and photos show suit and ...

A 300-foot-tall anomaly on one of Mars' moons has intrigued observers for years.

NATIONWIDE — Crew-12 members and NASA astronaut Chris Williams were evacuated to a SpaceX Dragon capsule on Friday as Russia’s space agency was fixing an air leak on the International Space Station, ...

Astronomers discovered a moon-like object orbiting a brown dwarf that's orbiting a star. Say that three times fast.

Researchers found this material on the meteorite, which entered Earth's atmosphere moving faster than the speed of sound.

Can you identify the decade from a single photograph?  Every photograph is a time capsule. The clothing, the technology, the ...

New research suggests AI can be repeatedly fooled into mistaking non-life for life.

Exposure to microgravity aboard the International Space Station causes mitochondria in human cells and in worms to produce ...

Modern classics like Interstellar, The Martian, and Arrival are among the best hard sci-fi movies released since the year ...