Explore the most remarkable declassified UFO footage ever released by the U.S. Department of Defense. This video delves into real UAP encounters captured by military aircraft and examined by the ...

A peculiar gamma-ray glow from the heart of the Milky Way has left astronomers scratching their heads. This strange emission, ...

Earth's moon is occasionally illuminated by flickers, glows or beams of light. What are these mysterious lights?

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. For over 400 years ...

For centuries, stories about will-o’-the-wisps have captured the popular imagination. Countless tales have been told to ...

The authors of "Unnatural Ohio: A History of Buckeye Cryptids, Legends and Other Mysteries" will discuss their book at 6 p.m. Sept. 25 at the Hayes Presidential Library & Museums. Kevin Moore, curator ...

Across the United States, certain landmarks whisper tales of untold sorrow and violence, their structures now serving as ...

Catatumbo lightning phenomenon mysterious disappeared for months in 2010. August 2, 2011— -- A mysterious symphony of rapid-fire lightning bolts used to create the greatest light show on Earth ...

A mysterious phenomenon took place in southeastern Idaho in 1975 when dozens of cattle were being found mutilated. The story ...

For hundreds of years, people who have lived near Seneca Lake in upstate New York have reported hearing loud booms coming from the water. No one is exactly sure why.

A NASA astronaut captured this odd weather phenomenon, called a red sprite, from the International Space Station. Nichole Ayers A NASA astronaut captured an image of a giant “red sprite” from space ...