This etext was prepared by Chris Brennen email@example.com Jill R. Diffendal Barb Grow firstname.lastname@example.org Christine L. Hall Goleta, CA. USA Pamela L. Hall email@example.com GREAT ASTRONOMERS by SIR ROBERT S. BALL D.Sc. LL.D. F.R.S. Lowndean Professor of Astronomy and Geometry in the University of Cambridge Author of “In Starry Realms” “In the High Heavens” etc.