Mars: ‘Impossible’ Discovery As Frost Found Near Equator

The volcano measures some 600 km across. It was obtained in the early morning by the High Resolution Stereo Camera aboard ESA’s Mars Express, and taken as part of new research revealing water frost for the first time near Mars ’s equator .Planetary scientists have long thought that the equatorial regions of Mars were too sunny and its atmosphere too thin to host frost or ice, but new images suggest otherwise.

The region is home to the colossal Olympus Mons—three times taller than Mount Everest—and the Tharsis Montes shield volcanoes.volcano not only on Mars but in the entire Solar System. The frost appears blue on the floor of the volcano’s caldera and around its northern rim. It is absent on the well-lit steep slopes seen on the left of this image.

“Its existence here is exciting and hints that there are exceptional processes at play that are allowing frost to form,” he said.the planet where it was thought impossible for frost to form. The finding used observations from two ESA ExoMars Trace Gas Orbiter instruments – CaSSIS and NOMAD – with additional imaging by ESA’s Mars Express.Mars is not like Earth, where frosty peaks are common. Mars has low atmospheric pressure, which means mountaintops are about the same temperature as the plains.

The amount of frost found on Mars equivalent to roughly 60 Olympic swimming pools. It's been detected in very thin patches, but covers a vast area. It only exists for a few hours around sunrise, before evaporating in sunlight.in the entire Solar System. The volcano measures some 600 km across.

But there’s another reason. “Frost deposition is linked to colder martian seasons, making the window for spotting it even narrower,” said Valantinas. “We have to know where and when to look for ephemeral frost. We happened to be looking for it near the equator for some other research but didn't expect to see it on Mars’s volcano tops.”Our community is about connecting people through open and thoughtful conversations.

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'We thought it was impossible:' Water frost on Mars discovered near Red Planet's equatorRobert Lea is a science journalist in the U.K. whose articles have been published in Physics World, New Scientist, Astronomy Magazine, All About Space, Newsweek and ZME Science. He also writes about science communication for Elsevier and the European Journal of Physics. Rob holds a bachelor of science degree in physics and astronomy from the U.K.
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