Columbia subject headings:
Harvard subject headings:
Astronomy--Europe--History--17th century.
Galilei, Galileo, 1564-1642
Kepler, Johannes, 1571-1630.
Religion and science--Europe--History--17th century.
Princeton subject headings:
Cosmology.
Galilei, Galileo, 1564-1642.
Kepler, Johannes, 1571-1630.