Christoph Scheiner, a Jesuit mathematician, argued that sunspots were planets or moons crossing in front of the Sun. Galileo, on the other hand, countered that the spots were on or …

Jul 21, 2023 · "A history of the controversy over sunspots with translations of the letters contained in Galileo's Istoria e dimostrazioni intorno alle macchie solari e loro accidenti.

Jan 1, 2010 · His contributions to observational astronomy include the telescopic confirmation of the phases of Venus, the discovery of the four largest satellites of Jupiter, named the Galilean …

Oct 30, 2010 · In addition, this book includes introductions, extensive notes, and a bibliography. 2. Sunspots before the telescope. 5. Tres Epistolae. Abstract. Galileo's telescopic discoveries, …

Sep 2, 2017 · On Sunspots by Eileen Reeves and Albert Van Helden features the work of Galileo Galilei, whose fame is well-known, and of Christoph Scheiner, the Jesuit astronomer who …

The study of sunspots emerged in the second decade of the seventeenth century as an essential element of the debate about the nature of the heavens: if these evanescent phenomena were …

Galileo’s telescopic discoveries, and especially his observation of sunspots, caused great debate in an age when the heavens were thought to be perfect and unchanging.

Christoph Scheiner, a Jesuit mathematician, argued that sunspots were planets or moons crossing in front of the Sun. Galileo, on the other hand, countered that the spots were on or …