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Scientist Discover Evidence of the First Large Body of Liquid Water on Mars


 


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 12 months ago '10        #1
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Scientist Discover Evidence of the First Large Body of Liquid Water on Mars
 

 
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FOR DECADES MARS has teased scientists with whispers of water's presence. Valleys and basins and rivers long dry point to the planet's hydrous past. The accumulation of condensation on surface landers and the detection of vast subterranean ice deposits suggest the stuff still lingers in gaseous and solid states. But liquid water has proved more elusive. Evidence to date suggests it flows seasonally, descending steep slopes in transient trickles every Martian summer. The search for a big, enduring reservoir of wet, potentially life-giving H20 has turned up nothing. Until now.

The Italian Space Agency announced Wednesday that researchers have detected signs of a large, stable body of liquid water locked away beneath a mile of ice near Mars' south pole. The observations were recorded by the Mars Advanced Radar for Subsurface and Ionosphere Sounding instrument—Marsis for short. "Marsis was born to make this kind of discovery, and now it has," says Roberto Orosei, a radioastronomer at the National Institute for Astrophysics, who led the investigation. His team's findings, which appear in this week's issue of Science, raise tantalizing questions about the planet's geology—and its potential for harboring life.

Marsis collected its evidence from orbit, flying aboard the European Space Agency's Mars Express spacecraft. It works by transmitting pulses of low-frequency electromagnetic waves toward the red planet. Some of those waves interact with features at and below the Martian surface and reflect back toward the instrument, carrying clues about the planet's geological composition. Conceptually, using the instrument to study Mars' polar regions couldn't be more straightforward: Just point it toward the ice and see what bounces back.

In practice, though, it's a lot more complicated. Marsis spends relatively little time above Planum Australe, the southern polar plane of Mars and the focus of Orosei's team's investigation. That meant the researchers could only listen for echoes periodically. It would take many readings—and many years—to get a clear picture of what lies hidden beneath the planet's southern ice cap. So in May of 2012, on the heels of a software upgrade that enabled Marsis to acquire more detailed data, the researchers began their survey.

visit this link https://www.wired.com/sto .. water-on-mars/

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 12 months ago '05        #2
Sizzler01 28 heat pts28
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every year they discover water on mars...when are they going to show us something new?
+1   

 12 months ago '04        #3
georgebenson 12 heat pts12
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Probably needed a budget approval so they pulled this out they a*s

 11 months ago '14        #4
King Maximus 5 heat pts
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We on the path to end up like Mars

Dry & desolate

 9 months ago '15        #5
donnyyy 17 heat pts17
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 Sizzler01 said
every year they discover water on mars...when are they going to show us something new?

They always say "could be evidence" of such and such


Frauds.

 9 months ago '06        #6
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NASA is real as WWE.

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