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Dr. William H. Waller is author of The Milky Way — An Insider’s Guide (Princeton University Press, 2013) and co-author with Paul W. Hodge of Galaxies and the Cosmic Frontier (Harvard University Press, 2003). Dr. Michael Deneen is a founder and sometime Chair of the Gloucester Area Astronomy Club; he has authored a number of articles on amateur astronomy and on 18th & 19th century British literature. He teaches at Endicott College in Beverly, MA.