## History of Astronomy |

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Page 57

He further discovered from his

apogee, the other of the nodes, and assigned the maximum value. Grant has

shown the values of some of these as given by observation in the tables of Meyer

and ...

He further discovered from his

**calculations**two new inequalities, one of theapogee, the other of the nodes, and assigned the maximum value. Grant has

shown the values of some of these as given by observation in the tables of Meyer

and ...

Page 61

But Laplace's

of the earth's orbit, which, according to theory, has a periodical variation of

enormous period, and has been continually diminishing for thousands of years.

But Laplace's

**calculations**showed the new value to depend upon the excentricityof the earth's orbit, which, according to theory, has a periodical variation of

enormous period, and has been continually diminishing for thousands of years.

Page 70

He applied to his

novelty of the problem, his

of astronomy. In criticism it has been said that these were exhibitions of skill

rather ...

He applied to his

**calculations**every possible refinement, and, considering thenovelty of the problem, his

**calculation**was one of the most brilliant in the recordsof astronomy. In criticism it has been said that these were exhibitions of skill

rather ...

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### Contents

Ancient AstronomyChinese and Chaldeans | 7 |

Ancient Greek Astronomy | 13 |

The Reign of Epicycles From Ptolemy | 23 |

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### Common terms and phrases

accurate observations Airy ancient astro Astronomer Royal astronomical units attraction axis bright calculations Cape Cassini catalogue centre century Chinese comet compute Copernicus diameter discovered discovery earth eclipse Egyptian epicycles equatoreal error excentric explain fact fixed stars Galileo Greenwich Halley Halley's comet heavenly bodies heavens heliometer Hipparchus Huggins hydrogen hypothesis instruments Johann Kepler John Herschel Jupiter Jupiter's Kepler Lick Observatory light line of sight lunar Mars mathematical mean distance mean motion measured Mercury meteor miles a second moon moon's nebula Newton nodes noticed Observatory orbit parallax perihelion period photographic physical planet planetary pole position predicted proper motion proved Ptolemy R. S. Phil recognised records refractor retrograde retrograde motion revolve round ring rotation satellites seems seen showed Sirius solar system spectra spectroscope spectrum sphere spots stellar sun-spots supposed tables telescope theory tion Trans Tycho Brahe Uranus velocity Venus Verrier zenith