Johann Fabricius


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Germanastronomer and physician, son of D. Fabricius. With his father, he used the method of projection to study the Sun telescopically. He studied sunspots, of which he was one of a number of independent discoverers along with C. Scheiner, Galileo, and the Englishman Thomas Harriot (1560–1621). By observing the change in position of sunspots, Fabricius found that the Sun rotates.

Subjects: Astronomy and Astrophysics.

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