 Major astronomers who practised as court astrologers included Tycho Brahe in the royal court of Denmark, Johannes Kepler to the Habsburgs and Galileo Galilei to the Medici.The astronomer and spiritual astrologer Giordano Bruno was burnt at the stake for heresy in Rome in 1600.Ephemerides with complex astrological calculations, and almanacs interpreting celestial events for use in medicine and for choosing times to plant crops, were popular in Elizabethan England.