Mars may have been a "blue planet" with an ocean the size of today's Arctic Ocean, a new study suggests.

Ancient shoreline features hint that water on Mars once formed a vast ocean.

Led by the University of Bern, the study involved investing Valles Marineris, the largest canyon system on Mars.

Data collected by China’s Zhurong rover has provided new evidence that Mars may once have hosted large oceans. Subsurface radar and geological features suggest the presence of ancient shorelines and ...

NASA’s rover Perseverance spent nearly a year exploring the rim of a crater believed to have held a huge lake.

New research suggests Mars was once a blue planet, as scientists identify river deltas and signs of a vast ancient ocean on ...

Three billion years ago, you could have stood on Mars and watched a river spill into a sea. That picture is still speculative ...

New findings from NASA's Perseverance rover have revealed evidence of wave-formed beaches and rocks altered by subsurface ...

Scientists have traced ancient Martian shorelines inside a giant canyon, revealing where a vast ocean once stood and why ...

Mars had an Arctic-sized ocean, and scientists are only now beginning to see the outline of it. For a long time, the planet ...

Swiss Research Team Discovers Evidence Of Ocean On Mars. A research team from the University of Bern has discovered traces of rivers on Mars. This provides evidence that the planet was once covered by ...

NASA's plans for Mars sample return are effectively cancelled as part of a bill approved by the U.S. Congress, ending efforts ...