Helisaeus Roeslin or Helisaus Roslin was a German physician and astrologer who adopted a geoheliocentric model of the universe.
12 Facts About Helisaeus Roeslin
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Helisaeus Roeslin was one of five observers who concluded that the Great Comet of 1577 was located beyond the Moon.
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Helisaeus Roeslin came to the conclusion independently that it was the Sun not the Earth that was center of the Solar System.
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Today Helisaeus Roeslin is best remembered for his controversies and involvement with geo-heliocentric world systems and for writing books about astronomy.
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Helisaeus Roeslin placed more emphasis on astrological predictions than did Kepler, and though he respected Kepler as a mathematician, he rejected some of Kepler's cosmological principles, including Copernican theory.
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At the time Helisaeus Roeslin was physician-in-ordinary to the count palatine of Veldenz and the count of Hanau-Lichtenberg in Buchsweiler in Alsace, Georg Hans I van Pfolz-Veldenz.
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Helisaeus Roeslin inquired about two German princes becoming his patron; Johann I, count Palatine and Wilhelm IV, Landgrave of Hesse-Kassei.
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Helisaeus Roeslin hoped that by making this comparison that he would be able to date when the Earth was created and project when the end of the world would happen.
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Helisaeus Roeslin projected the end of the world in his first manuscript trealise as well in his book, the Tabella.
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Helisaeus Roeslin wrote parts one and two of Ratio Studiorum et operum in the 1570s, around the time frame of the 1572 Nova, which was very inspirational for Helisaeus Roeslin in writing his book.
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Helisaeus Roeslin came to this conclusion after collecting astronomical data and comparing it to Biblical prophesies.
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Helisaeus Roeslin believed that in the year 1663 that the world would end with the final judgment by Christ and divine punishment of human wickedness.