'Glowing' sand dune erosion on the side of Mars' Kaiser Crater

While Mars is known as the red planet, a variety of colors can be found on the planet's surface. Just like on Earth, the array of colors we can see in images from Mars comes from the diverse minerals on or just under the ...

Image: Gullies of Matara Crater

Gullies on Martian sand dunes, like these in Matara Crater, have been very active, with many flows in the last 10 years. The flows typically occur when seasonal frost is present.

Mars gullies likely not formed by liquid water

New findings using data from NASA's Mars Reconnaissance Orbiter show that gullies on modern Mars are likely not being formed by flowing liquid water. This new evidence will allow researchers to further narrow theories about ...

Climate change speeds up gully erosion

The erosion of large natural channels by flowing water—gully erosion—can wreak havoc on fields, roads, and buildings. In some cases, the sudden expansion of gullies even claims human lives. Geographers from KU Leuven, ...

Mars gullies likely contain 'no water', study says

Months after scientists announced "the strongest evidence yet" of liquid water on Mars, a study Monday said there was none at least in the valleys carved into numerous Red Planet slopes.

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