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Unwrapping the Visual Discovery of Spiral Nebulae

by · Feb 22, 2014 · 2 363 views ·

Steve Gottlieb describes the history of observing M51 culminating with the discovery of it's spiral structure by the 72 inch Levianthon telescope by William Parons, Earl of Rosse. The companion lecture by Ken Lum describes his visit to the site.

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