Friends,
this is cool, check out the interactive Comet Ison below:
http://earthsky.org/space/check-out-this-comet-ison-interactive-model?utm_source=EarthSky+News&utm_campaign=8abced5928-EarthSky_News&utm_medium=email&utm_term=0_c643945d79-8abced5928-393817037
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