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Humans living on Mars now a lot more likely after Nasa scientists find large ice sheets on the red planet

‘You can go out with a bucket and shovel and just collect as much water as you need. I think it’s sort of a game-changer’

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This photo taken by a camera on Nasa's Mars Reconnaissance Orbiter shows snow and ice accumulated during Winter covering dunes in the planet's Northern hemisphere. Photo: AFP
Reuters

Scientists using images from an orbiting Nasa spacecraft have detected eight sites where huge ice deposits near the Martian surface are exposed on steep slopes, a potential source of water that could help sustain future human outposts.

While scientists already knew that about a third of the surface of Mars contains shallow ground ice and that its poles harbour major ice deposits, the research published on Thursday described thick underground ice sheets exposed along slopes up to 100 metres tall at the planet’s middle latitudes.

“It was surprising to find ice exposed at the surface at these places. In the mid-latitudes, it’s normally covered by a blanket of dust or regolith,” loose bits of rock atop a layer of bedrock, said research geologist Colin Dundas of the US Geological Survey’s Astrogeology Science Centre in Flagstaff, Arizona, who led the study.

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A cross-section of a thick sheet of underground ice is exposed at the steep slope that appears bright blue in this enhanced-colour view from a camera on Nasa’s Mars Reconnaissance Orbiter. Photo: Nasa/JPL-Caltech/UA/USGS
A cross-section of a thick sheet of underground ice is exposed at the steep slope that appears bright blue in this enhanced-colour view from a camera on Nasa’s Mars Reconnaissance Orbiter. Photo: Nasa/JPL-Caltech/UA/USGS

The latitudes were the equivalent on Earth of Scotland or the tip of South America.

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The researchers used images from Nasa’s Mars Reconnaissance Orbiter, which has studied the Martian atmosphere and terrain since 2006, including the history of apparent water flows on or near the surface.
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