Frost discovered on top of giant Mars volcanoes

A 3D model of the Olympus Mons volcano on Mars / AFP-Yonhap

Early morning frost has been detected on the peaks of massive volcanoes on Mars, an unexpected discovery about the dispersal of water on Mars that could one day prove essential for human exploration, scientists said.

The early morning frost was spotted in images taken by the European Space Agency’s Trace Gas Orbiter, according to a study published in the journal Nature Geoscience on Monday.

The immense volcanoes are in the Tharsis plateau, an elevated region nearly 5,000 kilometers wide near the Martian equator.

The volcanoes have been extinct for millions of years. Among them is the largest volcano in the solar system, Olympus Mons, which is almost three times taller than Mount Everest.

The discovery came by chance — no one expected to find frost in this region.

“We thought it was impossible for frost to form around Mars’s equator,” lead study author Adomas Valantinas said in a statement.

Plenty of sunshine and a thin atmosphere mean the temperature is relatively warm up there, “unlike what we see on Earth, 추천 where you might expect to see frosty peaks,” the researcher at Brown University in the United States said in a statement.

There is also little water in the atmosphere near the Martian equator, making condensation less likely.

“Other space probes have observed frost but in wetter regions — notably the northern plains,” study co-author Frederic Schmidt of France’s Paris-Saclay University told AFP.

The Trace Gas Orbiter, which has been orbiting Mars since 2018, was able to take images when the first rays of the Sun crossed over the tops of the volcanoes.

“We saw a shiny, blue deposit there, a particular texture that we only see in the early morning and during the cold seasons,” Schmidt said.

The layer of the ice is only the thickness of a hair — and it does not last long.

But there is about 150,000 tonnes of water — equivalent to 60 Olympic swimming pools — in the daily frost at the summits of volcanoes Olympus Mons, Arsia Mons, Ascraeus Mons and Ceraunius Tholus, the ESA said.

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