DISCOVERY SCIENCE

Is it possible Apollo 16 astronauts witnessed a UFO during a trip to the Moon? Did an alien craft leave a pattern of burns on a man’s body? Tony Harris and his team of experts examine the clues to determine the validity of what we're seeing.

While the team struggles to stop water from pouring into the Garden Shaft, the connection between Oak Island, Captain Phipps and The Knights Templar is rapidly intensifying on Lot 5.

Perhaps the greatest unexplained mystery of all is: what happens to us after we die? Perhaps clues to the answer lie in unusual cases of near-death experience.

Rick can’t help falling in love with a “Viva Las Vegas” movie poster from France. Is this deal fit for a king, or will the poster leave the building? Meanwhile, Corey reaches Nirvana when a seller brings in a drumstick signed by Dave Grohl.

Rick tries to hook a deal when a signed Jaws poster comes into the shop. Will the seller bite or will Rick say "We're gonna need a bigger offer?" Then, Chum takes aim at a crossbow gun. Will he have a deal in his crosshairs, or will he miss the mark?

Ancient Aliens is counting down ten of the most intriguing and mysterious symbols and codes found that just might contain proof of otherworldly contact. From glyphs in the Peruvian desert, to spiral petroglyphs embedded with advanced mathematics.

Some secrets refuse to stay buried. Whether it’s illicit cargo in a frozen lake, a stolen masterpiece worth millions, or a brothel hidden in the shadow of the Capitol—the truth always resurfaces.

From a legendary city swallowed by the jungle, to an underground metropolis stretching 18 levels deep, and even a forgotten pyramid from a lost civilization, sometimes the biggest mysteries on Earth are closer than we think.

For years, cultures around the world have held a belief in stargates through which beings have traveled to Earth from distant points in the universe and even other dimensions. Could such portals truly exist?