Western Washington University   College of Sciences and Technology   Physics/Astronomy Dept.   Bellingham, WA USA

Perseus races to rescue the beautiful princess on the back of his winged horse Pegasus. Nearby we see the bright star Algol, "The Demon Star," which mystified the ancients with its ever changing brightness. As we find our way across the autumn sky, we look deeper and see the faint glow of the Andromeda Galaxy - hundreds of billions of stars all swimming about in a great pool of gravity.

17 min 53 sec
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