Archaeology workers toil in front of the Great Pyramid, in Giza, Egypt, in 2010. Researchers say they've discovered a new room inside the ancient structure.

A high-tech radar recently detected peculiar "plasma bubbles" over the Great Pyramids of Giza as the mysterious entity hung in the sky over the wonder of the world.

The Great Pyramid of Giza has been probed with the tools of modern particle physics by scientists who say they have discovered a huge, secret space hidden within its ancient walls. It is located ...

The Great Pyramid of Giza has been probed with the tools of modern particle physics by scientists who say they have discovered a huge, secret space hidden within its ancient walls.