## History of Astronomy |

### From inside the book

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Page 26

1 In his great book Copernicus

uniform , circular , perpetual , or else composed of circular movements . ” In this

he proclaimed himself a follower of Pythagoras ( see p . 14 ) , as also when he ...

1 In his great book Copernicus

**says**: “ The movement of the heavenly bodies isuniform , circular , perpetual , or else composed of circular movements . ” In this

he proclaimed himself a follower of Pythagoras ( see p . 14 ) , as also when he ...

Page 28

... motuum coelestium diligenti et artificiosa observatione colligere . Deinde

causas earundem , seu hypotheses , cum veras assequi nulla ratione

whoever is not satisfied with this explanation must 28 THE GEOMETRICAL

PERIOD.

... motuum coelestium diligenti et artificiosa observatione colligere . Deinde

causas earundem , seu hypotheses , cum veras assequi nulla ratione

**says**thatwhoever is not satisfied with this explanation must 28 THE GEOMETRICAL

PERIOD.

Page 29

being told that “ mathematics are for mathematicians ” ( Mathematicis

mathematica scribuntur ) . At the same time he expresses his conviction over and

over again ...

**says**that whoever is not satisfied with this explanation must be contented bybeing told that “ mathematics are for mathematicians ” ( Mathematicis

mathematica scribuntur ) . At the same time he expresses his conviction over and

over again ...

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### Contents

Ancient GREEK ASTRONOMY | 3 |

INSTRUMENTS OF PRECISIONSIZE OF THE SOLAR | 10 |

GALILEO AND THE TELESCOPENOTIONS OF GRAVITY | 46 |

5 other sections not shown

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### Common terms and phrases

accepted accurate ancient appear astronomers attraction bodies born bright calculations called catalogue cause centre century circle comet compared complete Copernicus determined diameter direction discovered discovery distance earth eclipse effect enabled epicycles equal error excentric explain fact fixed follow force Galileo give given gravitation heavenly heavens held Herschel Hipparchus idea included interesting invented Jupiter Kepler knowledge known later light lunar Mars mass mathematical mean measured method miles minutes moon moon's motion move Newton noticed object observations Observatory opposition orbit original parallax pass period photographic physical planetary planets pole position predicted present principle progress proper proved records revolve rotation round Royal satellites says seems seen showed solar system spectroscope spectrum stars studied sun's supported supposed surface tables telescope theory tion trace true Tycho Brahe uniform universal