Hipparchus
Gerhard Kremer
Gerardus Mercator
Mercator
Eratosthenes
Socrates of Constantinople
Aristarchus of Samos
Socrates
Claudius Ptolemaeus
Hypatia
Ptolemy
Nicolaus Copernicus
Copernicus
villanellist
Mikolaj Kopernik
Galileo
Euclid
Paul Vernier
trigonometrician
Pierre Vernier
Vernier
Galileo Galilei
Etruscologist
Johan Kepler
Johannes Kepler
Kepler
Iapetus
astro-boffin
Benjamin Peirce
Peirce
Kastler
Alfred Kastler
Regiomontanus
Gauss
Bessel
Karl Gauss
Arthur Eddington
Karl Friedrich Gauss
Sir Arthur Stanley Eddington
Eddington
cosmogoner
Muller
Friedrich Bessel
John Herschel
Herschel
Carl Friedrich Gauss
Sir John Frederick William Herschel
Friedrich Wilhelm Bessel
Sir John Herschel
Johann Muller
Pierre de Fermat
Alhacen
Alhazen
Edmund Halley
Fermat
Ptolemaist
Ibn al-Haytham
Marquis de Laplace
astronomer
Pierre Simon de Laplace
Tycho Brahe
Brahe
Halley
stargazer
Laplace
Pierre-Simon Laplace
al-Haytham
uranologist
Al-Hasan ibn al-Haytham
Edmond Halley
Harlow Shapley
Isaac Newton
Newton
Sir Isaac Newton
Xenophanes
Avogadro
almagest
tetraeteris
Shapley
Etruscology
Amedeo Avogadro
astrologer
astrologist
Henry Norris Russell
Bernhard Riemann
Georg Friedrich Bernhard Riemann
Riemann