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Ages Aristotle astronomy attracts believed body born bright calculations called century changed circle colors complete Copernicus course dark died direction discovered discoveries distance earth Europe exactly experiment explained fact fall fixed force four Galileo gives glass globe Greek half heavens Herschel hundred idea important invented Italy Jupiter Kepler kind knew known learned Lick Observatory light lived look Mars mass matter measure miles moon motions move Nature nearly Newton night object observations once orbit particle picture planets planets moved proved round satellites Saturn scientific seemed seen seven shadow shining side solar space square stars suppose surface takes telescope things thought thousands tried true turned Tycho's understand universe Uranus Venus whole
Página 113 - Moreover, the satellites are invisible to the naked eye, and therefore can have no influence on the earth, and therefore would be useless, and therefore do not exist.