When a perfect triangle is found in the middle of a unpopulated portion of Australia, experts begin to wonder whether or not the design is man made.

Satellite photos show a strange circle beneath the ice of an ancient lake. Further analysis shows that these mysterious rings appear each year. What are they?

A satellite captures an image that uncovers the entrance to an underground complex. What is being built there?

Scientists are baffled when a seemingly huge tsunami headed straight for Hong Kong suddenly disappears in the water.

Sandy Island seems to have disappeared, and scientists aren't quite sure why. Was there some sort of elaborate government experiment?

Satellite images capture a distinct glowing object beneath the ocean's surface.

Satellite images reveal a strange hole in Antarctica. After scientists rule out whirlpools and sinkholes, they have to look back in time to find the answer.

A commercial satellite imager spots something strange in the middle of a vast desert. It looks like an airport runway, but there are no planes. No government claims ownership of this strange place.

Satellite images reveal enormous spirals in Peru. Some researchers say they are too perfect and too huge to be man made.

Ghost lakes have existed for millions of years, but they just recently started showing themselves. Geophysicist Helen Fricker explains how scientists are moving forward with this discovery.

For years the hottest place on Earth ever recorded was a city in Libya. When researchers took a second look at this information, they realized the measurement was wrong.

When you think of deserts, you don't typically think of bright, jewel tones. Why are these massive pools of color here?

Who drew this over 2 mile long humanoid figure into the Australian terrain?

Satellite images revealed hundreds of black holes in the middle of the desert near ancient burial grounds. Is grave robbing still a thing in modern day or were these holes caused by something else?

Satellites spotted a strange, long streak across the desert in Bolivia. At first, scientists thought it may be a skid mark from a meteor.

This isn’t an optical illusion. This lake on Middle Island is actually pink! You can thank the algae in the lake for the gorgeous color.

When you think of deserts, you don't typically think of bright, jewel tones. Why are these massive pools of color here?

Satellite images capture a distinct glowing object beneath the ocean's surface.

The people that once lived here were brutally destroyed by Genghis Khan. Why are these beehive structures all that remain of this civilization?

Who drew this over 2 mile long humanoid figure into the Australian terrain?

Despite the fact that the Pacific has over 25,000 islands, this area of ocean should be open water. What is this island-like item that seemingly appeared overnight?

A ghost ship appears on a California beach.

Satellite images revealed hundreds of black holes in the middle of the desert near ancient burial grounds. Is grave robbing still a thing in modern day or were these holes caused by something else?

Experts investigate a seemingly alien lake, that may reveal secrets about Martian life.

Researchers suggest that this ancient Mongolian burial ground was reserved for someone of utmost importance.

Satellites spotted a strange, long streak across the desert in Bolivia. At first, scientists thought it may be a skid mark from a meteor.

A lightning bolt scars the Australian outback.

When scientists examined satellite photos from the Bermuda Triangle, they were surprised to find hexagonal clouds. These clouds are eerily similar to a phenomenon seen on the other side of the world.

This isn’t an optical illusion. This lake on Middle Island is actually pink! You can thank the algae in the lake for the gorgeous color.

An eerie green vortex of death swirls in the Baltic sea.

If it's not a whirlpool, what is it? It's 100 miles long!

Meteorologists were stunned when a strange storm became randomly enormous. Turns out it wasn’t a storm.