Aliens & UFOs
Do Aliens & UFOs exist? Has man been visited by other races from other worlds? Explore the fascinating evidence for and against the existence of extraterrestrials.
What Is a Harvest Moon?
The Mysteries of Mercury Retrograde Unveiled: A Cosmic Phenomenon
A Comprehensive Guide to the Layers of the Earth
10 Best Ideas for Interplanetary Communication
How can the moon generate electricity?
How Terraforming Mars Will Work
What Really Happened to Yuri Gagarin, the First Man in Space?
Apollo 11 One Giant Leap For Mankind
How Sputnik Worked
Moon's Glass Beads Hold Billions of Tons of Water
Quiz: Apollo 11, the First Moon Landing
Who was James Webb?
The Fastest Fictional Spaceships
10 Fictional Spacecraft We Wish Were Real
How Lunar Rovers Work
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Mike St. Lawrence has been selling alien abduction insurance since 1987, says he's sold enough policies to “put my dog through obedience school.”
In July, 1947, unusual debris was found in Roswell, New Mexico. The U.S. Army stated they had received a crashed disc, only to rescind it hours later. Learn more about the Roswell, New Mexico UFO crash.
Less than 100 miles from Las Vegas, is the most famous secret military installation on the planet: Area 51. For decades, the U.S. government refused to acknowledge it existed. But now, the secret is out.
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The accounts are oddly similar: darting lights in a night sky, a hovering disc, radio interference. How can so many people be "mistaken"? Learn about the evidence for and against alien UFOs and check out some of the stranger tales of contact.
In space, no one can hear you scream — but they might be able to hear The Beatles' "Across the Universe." The idea of ETs listening to our radio signals or watching our TV shows is pretty far out, but is it even possible?
UFOs and UAPs both refer to unidentified objects in the sky, but scientists prefer the term UAP. And that's because when we hear UFO, we automatically assume aliens.