A new video reveals a well-rehearsed cabal of operatives using stealthy pre-arranged signals and timing sequences to walk RFK into a Kill Zone

The FBI has begun to process for release a 2054 page file dating from the mid-1950s describing how the world nearly ended.

If some unidentified flying objects (UFOs) are related to intelligent visitors from elsewhere, what is the impact on national security and global security? This

Nasa's Voyager 1 has entered a new region of space between the Solar System and interstellar space in what Nasa has described as a 'cosmic purgatory'.

The Library of Congress and Twitter have signed an agreement that will see an archive of every public Tweet ever sent handed over to the library's repository of historical documents.

A Missouri police officer at Lee's Summit reports watching a "round object with very bright, white lights" that hovered just above the tree tops

How many people can say their inventions prove UFOs are real?

A solid piece of metal crashed through the roof of a Plymouth furniture warehouse, but it did not come from a plane.

Fast as the FastRunner may become, it will never be able to escape the comparison to an ostrich.

U.S. spy agencies might have been eager to celebrate their success this holiday season, following the death of Osama bin Laden...

Three days before the Dec. 7, 1941 Japanese attack on Pearl Harbor, President Roosevelt was warned in a memo from naval intelligence that Tokyo's military and spy network was focused on Hawaii

Researchers say they've found two pits to the east and west of Stonehenge that may have played a role in an ancient midsummer ceremony.

A rover of "monster truck" proportions zoomed toward Mars on an 8 1/2-month, 354 million-mile journey Saturday, the biggest, best equipped robot ever sent to explore another planet.

Today the U.S. Army Space and Missile Defense Command/Army Forces Strategic Command conducted the first test flight of the Advanced Hypersonic Weapon (AHW) concept.