NASA's Curiosity rover has photographed extraordinary spiderweb-like formations on Mars that scientists believe could hold the key to ancient life on Mars ...

The Discovery of Ancient Liquid Water on Mars Wave ripples on the Martian surface have provided the first clear evidence of liquid water on Mars, not just frozen ice, approximately 4 billion years ago ...

Could ancient humans really have built the pyramids without extraterrestrial help? Or do such questions reveal more about modern anxieties than the past itself? The idea that aliens assisted the ...

Mars once had sprawling river systems that rivaled major watersheds on Earth, and scientists have now identified the biggest ones for the first time. Researchers mapped 16 massive drainage basins ...

Scientists edge closer to answering Mars’ biggest question: Did life ever exist on the red planet? Here's the latest from two new finds.

Do aliens exist? Could Earth really be the only planet hosting intelligent life? Debates over the existence of extraterrestrials date back to the earliest Indigenous and western thought. The tools ...

The popular history docuseries Ancient Aliens returns to the History Channel with its season 22 premiere Thursday, Ja. 15 at 9/8c. During the season 22 premiere episode, viewers tuning in will join ...