{"id":5796,"date":"2017-09-07T16:06:49","date_gmt":"2017-09-07T11:06:49","guid":{"rendered":"http:\/\/www.cawater-info.net\/all_about_water\/en\/?p=5796"},"modified":"2017-09-07T16:06:49","modified_gmt":"2017-09-07T11:06:49","slug":"examining-martian-meteorites-scientists-think-theyve-found-the-red-planets-missing-water","status":"publish","type":"post","link":"http:\/\/www.cawater-info.net\/all_about_water\/en\/?p=5796","title":{"rendered":"Examining Martian Meteorites, Scientists Think They\u2019ve Found The Red Planet\u2019s Missing Water"},"content":{"rendered":"

Mars is, largely, a cold, dead world. There’s still some water left at the poles and in the thin air, but for the most part Mars appears quite dry. It wasn’t always this way, however. Billions of years ago, scientists think,\u00a0Mars was covered in water\u2014peppered with lakes, or maybe even large oceans.<\/em><\/p>\n

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These images show the planet on the last day of Martian spring in the northern hemisphere (just before summer solstice). The annual north polar carbon dioxide frost (dry ice) cap is rapidly sublimating, revealing the much smaller permanent water ice cap.<\/p><\/div>\n

Yet today most of that water is gone. Researchers think that over the past few billion years the red planet’s water\u00a0was probably blown off into space,\u00a0carried away by the solar wind with the planet’s disappearing atmosphere.\u00a0But new evidence drawn from meteorites here on Earth chunks of Mars that had been blasted into space suggests that Mars might also have vast underground reservoirs.<\/p>\n

\u201cWhile recent orbiter missions have confirmed the presence of subsurface ice, and melting ground-ice is believed to have formed some geomorphologic features on Mars,\u201d\u00a0says NASA in a release, \u201cthis study used meteorites of different ages to show that significant ground water-ice may have existed relatively intact over time.\u201d<\/p>\n

The concept of a vast subsurface reservoir of water wouldn’t be unprecedented. On Earth, we have lots of groundwater. But we also may have something else:\u00a0a whole second ocean, with as much water as there is on the surface, chemically bound to minerals deep within the Earth’s mantle.<\/p>\n

The Martian underground water,\u00a0says Universe Today, could come in either of these forms. There might be big pockets of underground ice, or there may be a lot of water chemically bound to rock beneath the surface. You wouldn’t need to go all the way down to the mantle to find it,\u00a0says NASA the water would be bound to the crust.<\/p>\n

There’s a big gap roughly a 10-fold difference between how much water Mars seems to have now and how much researchers think it used to have,\u00a0says Universe Today. The confirmation of underground reservoirs could help close the case of the \u201cmissing Martian water.\u201d<\/p>\n

Source: http:\/\/www.smithsonianmag.com\/<\/a><\/p>\n

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