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| Instance hyponym | Al-Hasan ibn al-Haytham, al-Haytham, Alhacen, Alhazen, Anaximander, Anders Celsius, Aristarchus of Samos, Asaph Hall, Benjamin Peirce, Bessel, Bowditch, Brahe, Celsius, Claudius Ptolemaeus, Clyde Tombaugh, Clyde William Tombaugh, Copernicus, David Rittenhouse, Eddington, Edmond Halley, Edmund Halley, Eratosthenes, Friedrich Wilhelm Bessel, Galileo, Galileo Galilei, George Ellery Hale, Gerard Kuiper, Gerard Peter Kuiper, Giovanni Virginio Schiaparelli, Hale, Hall, Halley, Harlow Shapley, Henry Norris Russell, Henry Russell, Herschel, Herschel, Hipparchus, Huggins, Hypatia, Ibn al-Haytham, Jan Hendrix Oort, Johan Kepler, Johann Muller, Johannes Kepler, John Herschel, Kepler, Kuiper, Langley, Laplace, Lovell, Lowell, Maria Mitchell, Marquis de Laplace, Mikolaj Kopernik, Mitchell, Muller, Nathaniel Bowditch, Newcomb, Nicolaus Copernicus, Omar Khayyam, Oort, Peirce, Percival Lowell, Pierre Simon de Laplace, Ptolemy, Regiomontanus, Rittenhouse, Russell, Samuel Pierpoint Langley, Schiaparelli, Shapley, Simon Newcomb, Sir Alfred Charles Bernard Lovell, Sir Arthur Stanley Eddington, Sir Bernard Lovell, Sir Frederick William Herschel, Sir John Frederick William Herschel, Sir John Herschel, Sir William Herschel, Sir William Huggins, Sitter, Thales, Thales of Miletus, Tombaugh, Tycho Brahe, Willem de Sitter, William Herschel |
