Quote by: Johannes Kepler

The squares of the periodic times are to each other as the cubes of the mean distances.


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Author Bio


  • NameJohannes Kepler
  • DescriptionGerman mathematician, astronomer and astrologer
  • AliasesKepler
  • BornDecember 21, 1571
  • DiedNovember 15, 1630
  • CountryHoly Roman Empire
  • ProfessionNaturalist; Astrologer; Theologian; Mathematician; Astronomer; Science Writer; Musicologist; Physicist; Cosmologist; Music Theorist; Science Fiction Writer