Scientists believe they found fresh proof of an ancient ocean on Mars in the form of a “bathtub ring” it left after it dried ...

Mars has long puzzled scientists. Dry riverbeds, mineral traces, and layered rocks hint at a wetter past. For decades, ...

A huge geological structure on Mars resembling a bathtub ring may be evidence of an ocean that once covered a third of the ...

Like Earth and the solar system's other planets, Mars formed roughly 4.5 billion years ago. Early in its history, Mars was ...

The ancient ocean on Mars probably occupied a third of its surface.

Renditions of Mars and Earth seen from space. - buradaki/Shutterstock For several decades now, one of the most enduring topics in space research has been finding consistent sources of water on the ...

We were as excited as anyone when MARSIS (the Mars Advanced Radar for Subsurface and Ionosphere Sounding) experiment announced there was possibly liquid water under the southern polar ice cap. If ...

Two of the most-discussed observations of potential liquid water activity on the surface of Mars. Credit: Proceedings of the National Academy of Sciences (2024). DOI: 10.1073/pnas.2321067121 More than ...

For several decades now, one of the most enduring topics in space research has been finding consistent sources of water on the planet Mars. It has been confirmed that there is water on Mars, but if ...