Mystery behind red streaks on Europa's surface could now be solved

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Mystery behind red streaks on Europa's surface could now be solved
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Scientists have long speculated about the composition of these 'unearthly' substances.

"It's rare nowadays to have fundamental discoveries in science," said Baptiste Journaux in a, one of the lead authors. "Salt and water are very well known in Earth conditions. But beyond that, we're totally in the dark."

"And now we have these planetary objects that probably have compounds that are very familiar to us but in very exotic conditions. We have to redo all the fundamental mineralogical science that people did in the 1800s but at high pressure and low temperature. It is an exciting time," he added. A hydrate is a rigid, salted, icy lattice that forms at low temperatures and is kept together by hydrogen bonding. The sole sodium chloride hydrate previously known had a straightforward composition; one salt molecule for every two water molecules.roughly the size of a sand grain to a pressure of 25,000 times that of atmospheric pressure. The team could observe the procedure under a microscope due to the transparency of the diamonds.

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