“Motz, Lloyd, et al. "Tycho Brahe and Johannes Kepler." The Story of Astronomy (1995): 69-87.”
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“Motz, Lloyd, et al. "Tycho Brahe and Johannes Kepler." The Story of Astronomy (1995): 69-87.”
Captured 2026-08-15 from Wikiquote (en). The archived copy is preserved so this citation survives link rot.