Gullies on Mars may have formed when the Red Planet was highly tilted on its side, triggering dramatic shifts in climate that sent water cascading down slopes to carve out ravines, a new study finds.

They then matched the data from their model to periods in Mars history when the gullies in the planet’s Terra Sirenum region are believed to have expanded rapidly downhill from high elevation ...

Mars' irradiated surface is a godforsaken place. And yet there may be shallow pools of water near the Martian surface, a place 1,000 times drier than the driest desert on Earth. NASA's Mars ...

Frozen carbon dioxide is everywhere on Mars, including in its gullies. When CO 2 ice sublimates on one of these gullies, the resulting gas can push debris further down the slope and continue to ...

Researchers have previously shown that there may have been past periods on Mars when liquid water likely formed gullies if Mars tilted enough on its axis. The new study, published in the journal ...

The white areas on the edges of these gullies in the Martian region of Terra Sirenium, shown in an image from NASA’s Mars Reconnaissance Orbiter, are thought to be areas of dusty ice similar to ...

this set a record for the most operational spacecraft on Mars. Images from MRO, alongside additional images from MGS, showed further evidence of dry riverbeds, floodplains, and gullies on Martian ...

They then matched the data from their model to periods in Mars history when the gullies in the planet’s Terra Sirenum region are believed to have expanded rapidly downhill from high elevation ...

But the image clearly shows the white patches on the Mars gullies in an area called Terra Sirenum. (The blue seen at the gullies' bottom is coarse sand, a color not visible with the human eye but ...

Image of the Terra Sirenum and its gullies captured by the High Resolution Imaging Science Experiment (HiRISE) camera on NASA’s Mars Reconnaissance Orbiter. CREDIT NASA/JPL/Univ. of Arizona.