-Great Astronomers: Tycho Brahe - Great Astronomers: Johannes Kepler - Great Astronomers: Isaac Newton - Great Astronomers: Nicolaus Copernicus - Great Astronomers: Galileo Galilei - Great Astronomers: John Flamsteed -Great Astronomers: Edmond Halley - Great Astronomers: James Bradley - Great Astronomers: William Herschel - Great Astronomers: Pierre-Simon Laplace - Great Astronomers: William Parsons - Great Astronomers: William Rowan Hamilton