Researchers have found new evidence for a massive subsurface ocean on Mars, again raising the possibility of microbial life lurking deep below the Martian surface. As detailed in a paper in the ...

"Hence the 'follow the water' theme of Mars exploration," he told the outlet. "Most exciting to me was the chance to look beneath the surface at a place we think there could have been an ocean and ...

Previous studies estimated that there could be enough water deep underground on Mars to cover the surface in a global ocean ...

China’s Zhurong rover found underground beach-like deposits, strengthening the case for a Mars ocean 4 billion years ago. If Mars had beaches, it means large, ice-free oceans once existed ...