Some Notable Astronomers and Theoreticians

  Eratosthenes of Cyrene (276 BC - 194 BC)

  Ptolemy, Claudius (c 85 - 165)

  Ulugh Beg, Mohammed Targai (1393-1449)

  Copernicus, Nicolaus (1473-1543)

  Brahe, Tycho (1546-1601)

  Galilei, Galileo (1564-1642) 

  Kepler, Johannes (1571-1630)

  Newton, Sir Isaac (1643-1727)

  Halley, Edmond (1656-1742) 

  Mitchell, Maria (1818-1889)

  Barnard, Emerson Barnard (1857-1923)

  Einstein, Albert (1879-1955)

  Hubble, Edwin Powell (1889-1953)

  Hawking, Stephen William (1942-)