TV Guide Science Tuesday

From a Stone Age fisherman in Chile and a lost Egyptian city to mysterious mummies in China's Tarim Basin and a vast defensive system beneath Jerusalem.

Experts examine an ancient Egyptian cemetery and discover its links to historic weaponry, and later they investigate a lost South Asian society.

Discover how ancient peoples fought, feasted and forged cultural connections across some of history's harshest landscapes in Mongolia and Iraq.

Stunning archaeological findings reveal how human resilience, belief and conflict shaped life in the world's harshest deserts.

The tomb of Alexander the Great mysteriously vanishes and becomes a legend, but investigators piece together the evidence to reveal where his tomb lies.

From a hidden royal tomb in Egypt to mysterious Neolithic ritual sites in Arabia, discover how ritual, industry, and evolution shaped life, and death.

An astronomer records unusual radio signals from beyond the solar system; FBI agents find classified documents at the home of a NASA scientist.

Experts investigate when a former Area 51 insider suggests that the Roswell UFO incident was a devious Soviet conspiracy masterminded by Stalin.

Following NASA's New Horizons spacecraft's journey past Pluto, it encounters a strange alien world that shuts down the probe's computers.

The search for Dark Matter eludes scientists today; physicists have developed dozens of theories to determine if this mysterious substance could exist.

Experts explore how the Earth has teetered on the verge of destruction, and how chaos and catastrophe may be vital ingredients for a living planet.

A bizarre, tentacled black mass that emerged on an island in the Caribbean from the seas is investigated by a group of experts using innovative technology.

Parasites are discovered living in a man's nose when he visits a doctor due to agonizing facial pain, and footage of the gruesome encounter reveals more.

Footage of a wolf-like creature secluded in the wilderness of northern Canada may be proof of a dire wolf, so experts use innovative technology to investigate.

Video taken by a mourner at a man's funeral captures eerie footage of a corpse waving through the glass window from inside his coffin.

A massive explosion suddenly shakes the ground in a Chinese city and the cause could be as simple as a surplus of cooking oil poured into the sewer system.

In a normally quiet English suburb, cameras capture shocking footage of a woman mysteriously disappearing from her bed next to her sleeping husband.

When footage surfaces of a man under attack from an alleged alien, investigators use the latest technology to look for the truth.

The phenomena of alien abduction are investigated, along with the alleged alien implants that are sometimes left behind in several victims are examined.

UFO experts investigate the legend of the lost city of gold called El Dorado, and whether ancient civilizations traded gold for extraterrestrial knowledge.

New evidence and modern-day sightings of UFOs have experts thinking that Native American myths and legends of Star People may have existed on Earth.

UFO researchers investigate what really happened during some of the most incredible and sometimes life-threatening encounters between law enforcement and UFOs.

New evidence suggests that the holiest religious sites in the world have been deemed sacred because of contact with interstellar travelers in the distant past.

Investigators reveal the secret connection to the UFO phenomenon and several U.S. Presidents, including FDR, Truman, Eisenhower and the Kennedy assassination.

UFO researchers investigate what really happened during some of the most incredible and sometimes life-threatening encounters between law enforcement and UFOs.

New evidence suggests that the holiest religious sites in the world have been deemed sacred because of contact with interstellar travelers in the distant past.

Investigators reveal the secret connection to the UFO phenomenon and several U.S. Presidents, including FDR, Truman, Eisenhower and the Kennedy assassination.

New evidence and modern-day sightings of UFOs have experts thinking that Native American myths and legends of Star People may have existed on Earth.

In a normally quiet English suburb, cameras capture shocking footage of a woman mysteriously disappearing from her bed next to her sleeping husband.

When footage surfaces of a man under attack from an alleged alien, investigators use the latest technology to look for the truth.