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White patches seen on Mars are ice

Now, The Main Question: Did The Ice Ever Melt And Turn Mars Into A Habitable Place? After a decade of shouting, "Follow the water!' in its exploration of Mars, Nasa can finally say that one of its spacecraft has reached out, touched water ice and scooped it up. Now, scientists will be able to tackle the main question they hope to answer: Did the ice ever melt and turn Mars into a habitable place?