Vast area of water discovered on Mars
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A European Mars orbiter has found water ice in the heart of the Valles Marineris canyon system – an area about the size of the Netherlands
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EXOMARS TRACE GAS ORBITER

MARS
(diameter: 6,791.4km)
Below detail
Valles Marineris 

Fine Resolution Epithermal Neutron Detector (FREND) Can detect hydrogen, one of two elements that make up water, to depth of 1 metre

Abundance of hydrogen detected

Valles Marinrie is 3,000km long and ten times longer and five times deeper
than Grand Canyon in United States

Area: 630,000km2

Candor Chasma 
Melas Chasma

Vertical height of terrain amplified by factor of four

Water believed to persist permanently as ice below dry soil – like Earth’s permafrost

1m
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Pictures: ESA, NASA, Google Earth Pro
Sources: UPI, Space.com, ESA
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