Biographical Encyclopedia of Astronomers

2014 Edition
| Editors: Thomas Hockey, Virginia Trimble, Thomas R. Williams, Katherine Bracher, Richard A. Jarrell, Jordan D. MarchéII, JoAnn Palmeri, Daniel W. E. Green

Castelli, Benedetto (Antonio)

  • Steven N. Shore
Reference work entry
DOI: https://doi.org/10.1007/978-1-4419-9917-7_248

BornBrescia, (Italy), 1578

DiedRome, (Italy), 19 April 1643

Benedetto Castelli was one of  Galileo Galilei’s principal collaborators, an important academic physicist, and a contributor to the diffusion of Copernicanism in the seventeenth century. He entered the Benedictine order at Brescia in 1575, taking the name Benedetto by which he is now universally known. Before 1604, moving to the monastery at Santa Giusta near Padua, he came into contact with and studied under Galilei from 1604 to sometime in 1607, a period that marked the turning point of his intellectual life, after which he relocated to Cava for a few years. In 1610, likely during the summer of that year when he was back in Brescia, Castelli suggested using the phases of Venus as a test for the Copernican solar system in his correspondence with Galilei; the phases were observed by Galilei in October. They became a central verifying observation described in Galilei’s 1632 work, Dialogue on the Two Chief World Systems.

By 1611...

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Selected References

  1. Drake, Stillman (1971). “Castelli, Benedetto.” In Dictionary of Scientific Biography, edited by Charles Coulston Gillispie. Vol. 3, pp. 115–117. New York: Charles Scribner’s Sons.Google Scholar
  2. —(1978). Galileo at Work. Chicago: University of Chicago Press.Google Scholar
  3. Fantoli, Annibale (1994). Galileo: For Copernicanism and for the Church. Vatican City: Vatican Observatory Publications.MATHGoogle Scholar
  4. Masetti Zannini, G. L. (1961). La vita di Benedetto Castelli. Brescia.Google Scholar

Copyright information

© Springer Science+Business Media New York 2014

Authors and Affiliations

  • Steven N. Shore
    • 1
  1. 1.Università di PisaPisaItaly