B illions 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 ...

For years, scientists believed that Mars was a dry and barren world. However, recent research has revealed something incredible: evidence of ancient oceans, rivers, and lakes that once flowed across ...

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 ...

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.

A hypothetical picture of Mars 3.6 billion years ago, when an ocean may have covered nearly half the planet. The blue areas show the depth of the ocean filled to the shoreline level of the ancient ...

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 ...

The craters seen here in blue were formed by a meteoroid impact on Mars on Sept. 5, 2021. The impact was the first to be detected by NASA's InSight mission; the image was taken later by NASA's ...

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 ...

A hypothetical picture of Mars 3.6 billion years ago, when an ocean may have covered nearly half the planet. The blue areas show the depth of the ocean filled to the shoreline level of the ancient ...

If Mars’ crust is similar across the planet, there may be more water within the mid-crust zone than the “volumes proposed to have filled hypothesized ancient Martian oceans,” the authors ...