The Motion of Mars ( Major Trends In The History of Astronomy)

The Copernican theory fitted the planet orbits of small eccentricity (Venus, Earth. Jupiter and Saturn), but, as with the Ptolemaic-theory, Mars remained a problem. Discrepancies of more than a degree, unacceptable by any observational standards, still persisted. To Johannes Kepler (1571- 1630). enthralled with the beauty and symmetry of the… Read more“The Motion of Mars ( Major Trends In The History of Astronomy)”