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Dennis Mammana (born September 5, 1951) is an astronomy writer, lecturer, and sky photographer. His newspaper column "Stargazers" has run weekly since 1992, and his photos have appeared in the media. Born in Easton, Pennsylvania, Mammana graduated from Easton Area High School in 1969, and studied physics and astronomy at Otterbein College, where he received his B.A. in 1973. After completing work toward his M.S. in Astronomy at Vanderbilt University, he received a one-year internship at the Strasenburgh Planetarium in Rochester, New York. He has held positions at the Smithsonian Institution's National Air and Space Museum in Washington, D.C. from 1975-1978, the Flandrau Planetarium of the University of Arizona in Tucson from 1978-1986, and the Reuben H. Fleet Science Center in San Diego, California from 1987-2001. Mammana has authored six astronomy books for adults and children, as well as hundreds of magazine, encyclopedia and web articles. He currently resides in Borrego Springs, California.