Maestlin, Michael (1550–1631)
German astronomer and professor of mathematics at Tübingen who taught
and corresponded with Johannes Kepler. Although
he lectured generally using the Ptolemaic
system, he chose also to teach to a select group of students, including
Kepler, about the new Copernican system
in which Earth and the other planets revolved around the Sun. He thus played
an important role in Kepler's adoption of the heliocentric viewpoint.