For centuries, ancient monuments and mysterious markings, visible only from the sky, have captivated and puzzled researchers. The Nazca Lines in Peru, with their sprawling designs of animal shapes and ...

According to the popular series Ancient Aliens, on H2 (a spinoff of the History channel), extraterrestrial intelligences visited Earth in the distant past, as evidenced by numerous archaeological ...

The popular history docuseries Ancient Aliens: Origins returns to the History Channel with its season two premiere Monday, Oct. 6 at 8/7c. During the season two premiere episode, viewers will travel ...

The idea of there being extraterrestrial life is something that fascinates us humans, with many seeking evidence that we're not alone in the universe. In fact, some point to things on Earth that they ...