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). | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / SCIENCE SOURCE / New York Public Library |
Taille de l’image : | 3270 px × 5439 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |