Science editor Alan Boyle's Weblog: NASA's Cassini orbiter captures a close-up view of the Saturnian moon Helene, clearing the way for a global map of the 20-mile-wide "ice queen."
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Mon, 06/20/2011 - 3:24pm
Science editor Alan Boyle's Weblog: NASA's Cassini orbiter captures a close-up view of the Saturnian moon Helene, clearing the way for a global map of the 20-mile-wide "ice queen."