. . "Solar system" . . . . . . "Harmonies of the world. Book five"@en . . "Harmonies of the world. Book five" . . . . . . . "\"Professor Hawking illuminates Johannes Kepler's revolutionary work, Harmonies of the World. An introductory essay with insights into Kepler's life and times makes the work of this revolutionary thinker accessible to a new generation of readers\"--Back cover."@en . "Early works"@en . "Early works" . . . . . . .