Kepler’s data about the orbits of planetary bodies was supplied by his employer,

Question

a Nicolaus Copernicus
b Galileo Galilei
c Edmond Halley
d Tycho Brahe

Answer 1

Kepler's data about the orbits of planetary bodies was supplied by his employer, d) Tycho Brahe. Kepler worked as an assistant to Brahe, who had gathered extensive observational data on planetary positions.