cptau 127 Posted October 1, 2014 Share Posted October 1, 2014 In less than a human lifetime what we know about the stars and the universe has increased tremendously. That said the more we think we know, the more we realize there is so much more.................. http://www.youtube.com/watch?v=Ft2xQhOpHo0 Link to comment Share on other sites More sharing options...
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