{"id":4700,"date":"2015-10-27T16:03:51","date_gmt":"2015-10-27T11:03:51","guid":{"rendered":"http:\/\/www.cawater-info.net\/all_about_water\/en\/?p=4700"},"modified":"2015-10-31T16:19:19","modified_gmt":"2015-10-31T11:19:19","slug":"nasa-announces-evidence-of-flowing-water-creeping-down-slopes-on-mars","status":"publish","type":"post","link":"http:\/\/www.cawater-info.net\/all_about_water\/en\/?p=4700","title":{"rendered":"NASA announces evidence of flowing water \u201ccreeping down slopes\u201d on Mars"},"content":{"rendered":"

After a weekend of speculation, scientists were finally treated to NASA\u2019s big reveal: there is flowing liquid water on the surface of Mars.<\/em><\/p>\n

\"mars\"<\/a>According to researchers, NASA\u2019s Mars Reconnaissance Orbiter identified sloped streaks on the Martian surface that contain minerals called \u201cperchlorates,\u201d which are able to reduce the temperature at which water freezes up to -94 Fahrenheit. Those streaks only exist during the planet\u2019s cold season, in which temperatures routinely dip below that, and disappear during the warm season, when temperatures climb above -10 Fahrenheit.<\/p>\n

In an article to be published in a forthcoming issue of \u201cNature Geoscience,\u201d a team of NASA researchers argues that the reason behind the seasonal appearance of these streaks is that, in the warmer season, the perchlorate-rich water \u201ccreep[s] down Martian slopes,\u201d in the words of team-member Lujendra Ojha.<\/p>\n

\u201cSomething is hydrating these salts, and it appears to be these streaks that come and go with the seasons,\u201d she said in a statement. \u201cThis means the water on Mars is briny, rather than pure. It makes sense, because salts lower the freezing point of water. Even if RSL are slightly underground, where it\u2019s even colder than the surface temperature, the salts would keep the water in a liquid form and allow it to creep down Martian slopes.\u201d<\/p>\n

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

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