On the surface of Mars, 140 million miles from Earth ... from an advanced civilization now long extinct? Is it a religious artifact? Is it solid like the Great Sphinx? Or could it contain chambers ...

Map of Mars illustrating the fourteen missions to Mars, key sites, and examples of artifacts contributing to the development of the archaeological record: (B) Viking-1 lander; (C) trackways ...

Former CIA officer Joe McMoneagle's claims about ancient Martian life and pyramids have sparked debate within the scientific community. His revelations raise questions about the possibility of an ...

What do clouds on Mars look like? Well, a new video stitched together from images captured by NASA's Curiosity rover offers a glimpse. In this video, delicate red-and-green-tinted clouds are seen ...