Space Travel to the Moon and Kepler\u27s Dream

Johann Kepler advocated Copernicus\u27s heliocentric theory in his Dream and Notes. He imagined how a moon dweller would see the solar system and the conclusions he would draw. Then by reversing the point of view to the earth, Kepler showed that the same conclusions would follow. This involved concepts of mass, inertia, gravity, acceleration, velocity, and the driving force in a trip to the moon. Twelve years before Newton\u27s birth in 1642, Kepler published in this little known dream ideas which Newton later developed. Kepler\u27s ideas concerning the moon\u27s distance, motion, and conditions to be met in space are reviewed