Billions of years ago, Mars may have looked very different. The Mars ocean theory has been a subject of scientific debate and focus for the better part of 50 years now, ever since NASA’s Mariner ...

The evidence found by the rover includes traces of beaches that may have been adjacent to water, as well as geological features indicative of an ancient coastline in the region.

The “Mars ocean theory” has long been the topic of discussion among scientists and cartographers due to Mars’s geography, which suggests a large northern ocean once existed on its surface.

The Mars ocean theory hatched in the 1970s after spacecraft imagery showed an apparent large shoreline and seabed-like indentation. Some scientists discounted the idea since the shore seemed irregular ...

A new analysis of data collected by NASA’s InSight mission suggests there may be enough water beneath the surface of Mars to cover the planet.

Scientists have uncovered lots of evidence that Mars had standing water billions of years ago, before the planet lost its atmosphere. But did it have oceans? Measurements obtained by ground ...

A Chinese rover has found new evidence to support the theory that Mars was once home to a vast ocean, including tracing some ancient coastline where water may once have lapped, a study said ...

A Chinese Mars rover may have found evidence of an ancient ocean on the arid Red Planet. According to a new paper in the journal Scientific Reports, China's Zhurong rover has discovered traces of ...

The good news is that there's a vast ocean of water under the surface of Mars – enough to cover the entire planet to a depth of a mile (1.6 km). The bad news is that this repository is so deep ...

Science Space Solar System Moons The moon was once covered in an ocean of magma: new data supports theory Rocks collected by the Chandrayaan-3 offer more clues to the moon's violent past. By Tom ...

A Chinese rover that landed on Mars in 2021 detected evidence of underground beach deposits in an area thought to have once been the site of an ancient sea, providing further evidence that the ...

A new analysis of data collected by NASA’s InSight mission suggests there may be enough water beneath the surface of Mars to cover the planet.