Ravenstar Posted December 20, 2014 Share Posted December 20, 2014 I found this fabulous little series on astronomy… watched them ALL yesterday. Link to comment Share on other sites More sharing options...
pantheory Posted January 10, 2015 Share Posted January 10, 2015 I very good video. I also like the way he discussed possible problems with the distance ladder and unknown aspects of present theory. Link to comment Share on other sites More sharing options...
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