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Huge reserves of water ice discovered on Mars

Huge ice sheets more than 300 feet deep have been discovered on Mars, making it possible that human astronauts could have access to almost limitless water, scientists said Thursday. "Astronauts could essentially just go there with a bucket and a shovel and get all the water they need," said one of the report's authors, Shane Byrne of the Lunar and Planetary Laboratory at the University of Arizona. It has been known for some time that some locations on Mars have water ice just below the surface — but until now, there has been no accurate way to know just how much. The new data, collected in high-resolution three-dimensional images from two U.S. sa ...