Astronomy Cast Episode 245 – Calendars – Video


29-12-2011 14:54 This was the first recording time we’ve used Hangouts on Air to record a live version of Astronomy Cast. Our lives are ruled by calendars. And calendars are ruled by astronomy. As we near the end of 2011, and get ready to ring in the new year, let’s discover the astronomy underlying the days, weeks, months and years that segment our lives.

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(1) Astronomy Cast Episode 245 – Calendars – Video
URL: http://www.youtube.com/watch?v=lnecc3XrT2c



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