Does the government maintain secret contact with extraterrestrials? How long have they been communicating? Learn about theories of UFOs and government secrecy in the CIA and the NSA.
WHAT'S INSIDE: SPACE
- Aliens & UFOs
- Future Space
- Space Exploration
- Space Transportation Systems
The moon is often the largest object in the sky outside of the sun. What is the moon made of, how did it form -- and why do people blame it for their strange behavior?
Hollow earth theory was the brainchild of John Cleves Symmes, who sought to explore Earth's center, where UFOs supposedly come flying in and out. Read why some believe UFOs live inside the Earth.