TV Guide Science Wednesday

Recent news of the Pentagon's secret UFO program may reveal shocking evidence of what the U.S. military has known for decades about UFO sightings.

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

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.

With recent technological breakthroughs such as artificial intelligence and lasers, evidence suggests that these advances are the result of contact with UFOs.

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.

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

Earth is hit by 100 tons of rock from space every day, and most burn up in the atmosphere, but just a single rock wiped out the dinosaurs.

A fluke of gravity could turn millions of small scraps that populate the skies above Earth into projectiles, colliding in low orbit to spell certain disaster.

A blast from the death of a star concentrated on a single point would cause devastation and destroy all living things wherever this missile lands.

The search for intelligent extraterrestrial life has captivated generations of humans, but the underlying danger that aliens are hostile is a real possibility.

Black holes were once a theoretical phenomenon, but scientists now know that millions exist, and some of them have the potential to be lethal to earth.

Experts discuss the many possible events that could spark the beginning of the end for the universe, including when and how it might happen.

A volcanoes explosive force has crafted mountains and creates most of the Earth's surface; a look at what makes these sleeping beasts so deadly.

Whether it's from rain washing over the ground, rivers bursting their banks, or failed efforts to stem the flow, flooding is as inevitable as it is.

Hurricanes, typhoons and cyclones are all the same thing with different names, but what they also have in common is their destructive power.

Earthquakes occur when tectonic plates suddenly shift and shock waves shake the surface; they occur along fault lines, the most active is the Ring of Fire.

Experts examine discoveries and clues in the Amazon jungle that have been found through the combination of cutting-edge technology and innovative archaeology.

Archaeologists find hard proof of the prehistoric civilization that once thrived in the Amazon and learn how they built an advanced society in a hostile jungle.

New discoveries reveal the mystery of what happened to the ancient superpower that once thrived in the Amazon jungles and what caused it to fall.

Pioneering archaeologists have gained new access to investigate formerly forbidden sites to discover the truth behind forgotten Biblical cities.

Pioneering archaeologists have gained new access to investigate formerly forbidden sites to discover the truth behind forgotten Biblical cities.

A trio of teams competes in a festive engineering challenge that features blasting trees into the center of Christmas Town, sending snowmen sky high and more.

A trio of teams competes to find out which can save Christmas Town from an abominable snowman while steering clear of the naughty list.

During the final ornament tournament, the teams make a rushed delivery of letters, send decorations to Christmas Town, and give Santa's sleigh a powerful boost.

A trio of teams competes in a festive engineering challenge that features blasting trees into the center of Christmas Town, sending snowmen sky high and more.

A trio of teams competes to find out which can save Christmas Town from an abominable snowman while steering clear of the naughty list.

During the final ornament tournament, the teams make a rushed delivery of letters, send decorations to Christmas Town, and give Santa's sleigh a powerful boost.

Pioneering archaeologists have gained new access to investigate formerly forbidden sites to discover the truth behind forgotten Biblical cities.

Experts examine discoveries and clues in the Amazon jungle that have been found through the combination of cutting-edge technology and innovative archaeology.

Archaeologists find hard proof of the prehistoric civilization that once thrived in the Amazon and learn how they built an advanced society in a hostile jungle.