लेखक: William Sheehan

William Sheehan is an astronomical historian and author of the biography of Milky Way photographer and pioneering astronomer E.E. Barnard, The Immortal Fire Within (Cambridge University Press, 1995). He is a regular scholar-in-residence at leading observatories, including Yerkes, Lick, Lowell and Mt. Wilson. As both a professional psychiatrist and an astronomer, he has a unique insight into the personalities of the pioneering figures of the history of science. He has published a number of books on the history of solar system studies, especially on the Moon and Mars. Sheehan is a consulting editor of Sky & Telescope, a 2001 fellow of the John Simon Guggenheim Memorial Foundation for his research on the Milky Way, and a recipient of the Gold Medal of the Oriental Astronomical Association. Asteroid no.16037 is named in his honor. Christopher Conselice, an astronomer at the University of Nottingham, is one of the world”s leading experts on galaxy formationand evolution. He was educated at the University of Chicago and the University of Wisconsin-Madison and has held post-doctoral positions at the California Institute of Technology and the Space Telescope Science Institute. He was a regular contributor to Mercury, the magazine of the Astronomical Society of the Pacific. He has published his research in leading professional journals, including Science, Nature and the Astrophysical Journal.