Stargazers looking ahead, may experience, year of the great comets in 2013.  Two Russian Astronomers Vitali Nevski and Artyom Novichono discovered Comet Ison on September 21, 2011. Writer David Whitehouse previews more recently what sky watchers can expect in “‘Brighter than a full moon’: The biggest star of 2013… could be Ison – the comet…

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