The HiRISE camera on the Mars Reconnaissance Orbiter took a picture of water ice peeking out from under sediment in Milankovic Crater.
The HiRISE camera on the Mars Reconnaissance Orbiter has captured another beauty. This time the image shows water ice peeking out from a cliffside on Mars. A layer of sediment obscures most of the ice, but fingers of it are visible.
This topographical image of Mars shows the three volcanoes of Tharsis Montes, with Alba Mons to the north, and Olympus Mons to the northeast. Well above Olympus Mons is Milankovic crater, almost alone in the flat plain ofMars’ ancient oceans were turned to ice when Mars lost its atmosphere between about 3.7 billion to 4.2 billion years ago. The water now exists mostly as subsurface ice.
Mars’ water exists as ice, locked into the planet’s crust at varying depths, except for the possibility of liquid water heated by magma existing under the polar region. Scientists think that there are at least 5 million cubic kilometres of ice underground, with even more at depths beyond the capabilities of our current remote sensing instruments. Some of that ice is visible in the HiRISE image, peeking out from under a layer of sediment.
This image resembles more closely what the ice looks like to human eyes, but doesn’t highlight the presence of the ice as well as the IR image. Image Credit: NASA/JPL/UArizonashowed that between 30% and 90% of Mars’ original water may be frozen under the surface, with large deposits in the Arcadia Planitia region. In 2019 NASA made a map of Martian water across the planet’s surface. NASA said that some of the water is only 30 cm deep, making it easily accessible to future explorers.
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