A new study reveals Mars’s missing water may have slowly seeped underground, becoming trapped in ancient aquifers beneath the surface.

Visit Mars as it might have looked billions of years ago. Not frozen and dry, but wet, warm, and alive with flowing water.

This model focused on how igneous rocks interact ... to most of the carbon dioxide believed to have been lost from Mars' atmosphere since the planet transitioned to its current dry state.

All evidence points to Mars having had a carbon dioxide-rich atmosphere billions of years ago, but insufficient carbonates in Martian soil challenge this theory. Now, a new study using data from ...

"You could pull up Google Earth images of places like Utah, zoom out, and you’d see the similarities to Mars." ...

Each scenario led to a very different-looking Mars, with valley origins appearing in drastically different locations. In the ice-melt model, valleys mostly began at high elevations, near where the ...

The researchers used the software to model the evolution of the landscape on synthetic terrain that resembles Mars close to its equator. In some cases, the group added water to that terrain from ...

All evidence points to Mars having had a carbon dioxide-rich atmosphere billions of years ago, but insufficient carbonates in Martian soil challenge this theory. Now, a new study using data from ...

Scientists say the discovery of siderite, a type of iron carbonate, could be crucial evidence to support the theory that Mars once had a thick carbon dioxide-rich atmosphere, allowing a warm ...

Mars is covered in a fine powdery material that Martian winds often whip into dust storms. These powerful events can dramatically transform its landscape and atmosphere. Unlike Earth's storms ...