Billions of years ago, Mars used to have water on its surface. But over time, this water was lost. Now scientists have created a computer simulation which shows how water vapor moves through the ...

For decades, scientists have theorized about how Mars reached its current state. Many believe that the Red Planet's surface ...

How much water did Mars have in its ancient past and when did it disappear? This is what a recent study published in Geophysical Research Letters hopes to address as an international team of ...

The study of a new water-cycle in the Martian summertime offers clues as to why Mars is a dusty barren land. Once upon a time, billions of years ago, Mars was a waterlogged world, rich in rivers ...

For decades, scientists have puzzled over why Earth stayed warm and alive while Mars turned cold and dry. Both planets began ...

While Mars also has water present, most of what we've been able to detect is locked up in the form of ice. One possible source is the thin atmosphere, which carries small amounts of water.

The presence of water vapor high above Mars is puzzling because the Red Planet has a middle layer of its atmosphere that seems like it should be shutting down the water cycle altogether. [Mars ...

When that happens, according to the researchers' simulations, a window opens in Mars' middle atmosphere between 37 and 56 miles (60 and 90 kilometers) in altitude, allowing water vapor to pass ...

A new study offers key insights into Mars' water cycle, but the findings are based on seismic data from just one region, highlighting the need for future missions to confirm the results across the ...

Early in his career, Professor Craig Kochel, geology, examined evidence that water existed on Mars billions of years ago and he conducted research suggesting that groundwater, not dry sand movement, ...

A study released Monday using data from NASA's Mars InSight lander shows evidence of liquid water far below the surface of the fourth planet, advancing the search for life there and showing what ...

(The Conversation is an independent and nonprofit source of news, analysis and commentary from academic experts.) Elisabeth M. Hausrath, University of Nevada, Las Vegas (THE CONVERSATION) Mars ...