NASA Finds Evidence Water Flowed Recently on Mars
December 6, 2006 7:25 PM
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Image courtesy NASA
The photographs taken by the Mars Global Surveyor has scientists excited about the possibility of water on Mars
A new study of photographs
have revealed that bright new deposits observed in gullies on the planet Mars
may prove that water carried sediment through them sometime recently, according to NASA. The U.S. space agency believes it has found "compelling" evidence that liquid water once existed on the surface of Mars.
The recent images were taken by NASA's Mars Global Surveyor space probe. The discovery is important because it might help prove that the Red Planet has an environment that is favorable for living beings. Just trying to find remote signs of liquid water on Mars has been a goal among scientists around the world for a number of years.
The cameras on the Mars Global Surveyor were the first to take images that initially suggested water once flowed on Mars. Scientists then went and searched valleys in search for conclusive evidence of water flow. Just like most reports regarding Mars, there is some debate as to whether or not it really was liquid water -- some scientists claim that liquid carbon dioxide may have cut the gullies.
The findings by researchers were published today in the journal Science – NASA held a news conference to announce the results of the study. The idea that water recently flowed on Mars is another piece of the puzzle that NASA is trying to put together about the still very foreign Red Planet.
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12/7/2006 9:57:47 AM
> "AFAIK only ice can stay on Mars since it doesn't have the gravity to retain a atmosphere thick enough. Due to the low pressure liquid water will boil immediatly and be lost to space (Again due to low gravity). "
True...however it would take several hundred to several thousand years to do so, so it would be a short-term solution. Diverting an ice-based comet to strike Mars has been one of the many terraforming suggestions.
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