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Charles Malapert (1581–1630) was a Jesuit writer, astronomer and proponent of Aristotelian cosmology, from the Spanish Netherlands. He was considered one of the intellectual champions of the Roman Catholic Church. He used observations of comets and stars of the southern sky to attack the hypotheses of Copernicus and Galileo.
He is also known for observations of sunspots and of the lunar surface, and the crater Malapert on the Moon is named after him.
In 1630, Malapert was called to Spain to occupy a newly created chair in the Jesuit Colegio Imperial de Madrid. However, he fell ill during the journey and died in Vitoria-Gasteiz shortly after his arrival in Spain. Sylvius continued on.
Apart from being an astronomer and a mathematician, Malapert also wrote Latin poems and theatre plays that became modest bestsellers during the 17th century.
- DE VRIENDT, Fr. "Un savant montois au temps de l'apogée des Jésuites. Le père Charles Malapert s.j. (1581–1630)", in "Les Jésuites à Mons, 1598–1998. Liber Memorialis", dir. J. LORY, J. WALRAVENS and A. MINETTE, Mons, 1999, pp. 106–135.
- Arithmeticae practicae brevis institutio, Car Malapert, 1679, full text
- (in English) Alexander Birkenmajer, Alexius Sylvius Polonus (1593 ca. 1653), a little-known maker of astronomical instruments