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LIBRARY OF CONGRESS, RARE BOOK AND SPECIAL COLLECTIONS DIVISION / SCIENCE PHOTO LIBRARY LIBRARY OF CONGRESS, RARE BOOK AND SPECIAL COLLECTIONS DIVISION / SCIENCE PHOTO LIBRARY
Galileo's observations of stars in the Pleiades. Sketches of stars made from telescope observations by the Italian physicist, mathematician and astronomer Galileo Galilei (1564-1642). The known naked-eye stars (in the Pleiades star cluster) are shown as larger than the new stars Galileo observed with his telescope. These pioneering observations were first made in 1610, using the telescopes that Galileo had built in 1608. Galileo's also observed the Moon, and the planets, including the larger satellites of Jupiter. His observations challenged the existing worldview that said the heavens were perfect and unchanging. This page is from the 1610 edition of 'Sidereus Nuncius'.
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