Disclosing government documents about UFOs won't mean much without hard physical evidence for alien spaceships or alien bodies.
When a mysterious crescent appeared over Moscow in 1967, alien enthusiasts were unaware they were actually tracking a 3-megaton weapon designed to bypass American radar.
Can NASA and Elon Musk get us to Mars and beyond?
Trump has ordered the release of UFO files. The real question isn’t what they contain—it’s how the uncertainty could affect you.