William H WallerWilliam H. Waller worked as a scientist at NASA's Goddard Space Flight Center and a research professor at Tufts University before becoming a high-school science teacher. He is the co-author, with Paul Hodge, of Galaxies and the Cosmic Fronter and author of The Milky Way: An Insider's Guide. He lives in Rockport, Massachusetts. Read More Read Less
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