Cometographia, Title Page, 1668
Hevelius's book on comets. Title page of Cometographia (1668), by the Polish astronomer Johannes Hevelius. The artwork shows three astronomers representing three theories about comets. From left, the theories are: Aristotle's sublunar theory (that comets orbit between the Moon and the Earth); Hevelius's theory that comets originate from Jupiter or Saturn and follow parabolic paths around the Sun; and Kepler's theory that comets move in a straight line. On the roof of the building (right), telescopes and sextants are being used to observe a comet (top left).
Size: 2517px × 4186px
Photo credit: © Photo Researchers / Alamy / Afripics
License: Licensed
Model Released: No
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