Celestial mechanics planetary positions, using geometrical or arithmetical techniques, and contemporary discussions of the physical causes of the planets' motion. Johannes Kepler (1571–1630) was the first to closely integrate the predictive geometrical astronomy, which had been dominant from Ptolemy in the 2nd century to Copernicus, with physical concepts to produce a "New Astronomy, Based upon Causes, or Celestial Physics" in 1609. His work led to the modern laws of planetary orbits, which he developed using his physical principles and the planetary observations made by Tycho Brahe. Kepler's model greatly improved the accuracy of predictions of planetary motion, years before Isaac Newton developed
Stars and planetary systems in fiction by 75 times in only 20 seconds. None of the items below pretend that UV Ceti is orbited by habitable worlds. Wolf 359 is a red dwarf of apparent magnitude 13.5 and thus can only be seen with a large telescope. However, at approximately 7.8 light-years away it is the fourth-closest stellar system to the Sun; only the Alpha Centauri system, Luhman 16 and Barnard's Star are known to be closer. Thus, even though it is suspected to be a flare star, it has attracted the attention of science fiction authors, filmmakers, and game developers. Stars and planetary systems in