Michael Kratsios recently made the startling claim during a speech about American science innovations.
Move over Fred Flintstone... evidence of an extremely primitive form of ancient vehicle has been found.
The Virgin Galactic entrepreneur will be part of a three-man crew venturing 20 miles above the Earth's surface.
Archaeologists have discovered ancient drawings thought to have been created by a long lost civilization.
Researchers have unearthed a huge collection of rock engravings in South America dating back over 1,000 years.
The phenomenon, which was visible over the ocean, occurs under very specific atmospheric conditions.
Over 45 years ago, pilot Frederick Valentich vanished without a trace after encountering a UFO off the coast of Australia.
Found in the rivers and wetlands of South America, the green anaconda is very much more than meets the eye.
For decades, there have been stories of a particular type of South American palm tree that can 'walk' several meters a year.
Scientists have confirmed that the footprints at White Sands National Park really are 23,000 years old.
Planetary scientist Prof Monica Grady examines Loeb's claims concerning spherical metallic fragments found on the ocean floor.
A new survey has indicated that more than half of Americans believe that they're loved ones have come back to visit them.
Recent revelations about UFOs, as well as the recent subcommittee hearing, have rekindled interest in the topic.
This remarkable spherical screen can project realistic looking images that can be seen for miles around.
Mechanical engineering expert Eric Fusil takes a look at what ultimately happened to the crew of the ill-fated expedition.
Officials have confirmed the existence of recent footage showing UAPs being shot down over North America.
Three unidentified objects have now been downed by fighter jets over North America and we still don't know what they are.
South American social media influencer Funky Matas recently published a video showcasing the insane stunt.
Despite a few technical hiccups, the mission succeeded in further cementing America's dominance in the space race.
This huge marine creature - a 4-foot-long American eel - has been described as 'basically as big as they get'.