Johannes Stadius or Estadius, was a Flemish astronomer, astrologer, and mathematician. He was one of the important late 16th-century makers of ephemerides, which gave the positions of astronomical obj
Nicolaus Copernicus was a Renaissance polymath who formulated a model of the universe that placed the Sun rather than Earth at its center. The publication of Copernicus's model in his book De revoluti
Johannes Stadius
…had in a letter written in 1555 urged Stadius not to be afraid of being accused of believing in a moving earth and a stationary sun (i.e. the theory of Copernicus) or of abandoning the medieval Alfonsine Tables in favor of his own observations. In this letter Frisius further wrote that the system devised by…
"Toruń portrait" (c. 1580)
Copernicus's Toruń birthplace (ul. Kopernika 15, left). Together with no. 17 (right), it forms Muzeum Mikołaja Kopernika.
Copernicus's maternal uncle, Lucas Watzenrode the Younger
Collegium Maius at Kraków University, Copernicus's Polish alma mater