Fourteen Weeks in Descriptive Astronomy |
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Page 18
... centre of the solar system , and that the planets revolve about it in circular orbits ; that the earth revolves daily on its axis , and yearly around the sun ; that Venus is both morning and evening star ; that the planets are inhabited ...
... centre of the solar system , and that the planets revolve about it in circular orbits ; that the earth revolves daily on its axis , and yearly around the sun ; that Venus is both morning and evening star ; that the planets are inhabited ...
Page 20
... centre around which the sun and the heavenly bodies move . They then conceived that a bar , or some- thing equivalent , is connected at one end with the earth ; that at some part of this bar the sun is at- tached ; while between that ...
... centre around which the sun and the heavenly bodies move . They then conceived that a bar , or some- thing equivalent , is connected at one end with the earth ; that at some part of this bar the sun is at- tached ; while between that ...
Page 23
... centre about which revolve the earth and all the planets . He noticed how constantly , when we are riding swiftly , we forget our own motion , and think that the trees and fences are gliding by us in * Ple ' - ya - dez . the contrary ...
... centre about which revolve the earth and all the planets . He noticed how constantly , when we are riding swiftly , we forget our own motion , and think that the trees and fences are gliding by us in * Ple ' - ya - dez . the contrary ...
Page 24
... centre , and that all the heavenly bodies revolve about it daily in circular orbits . Brahé was a noble- man of wealth , and , in addition , received large sums from the Government . He erected a magnificent observatory , and made many ...
... centre , and that all the heavenly bodies revolve about it daily in circular orbits . Brahé was a noble- man of wealth , and , in addition , received large sums from the Government . He erected a magnificent observatory , and made many ...
Page 25
... centre of the system . At that time all be- lieved the orbits to be circular . Since , as they said , the circle is perfect , is the most beautiful figure in nature , has neither beginning nor ending , therefore it is the only form ...
... centre of the system . At that time all be- lieved the orbits to be circular . Since , as they said , the circle is perfect , is the most beautiful figure in nature , has neither beginning nor ending , therefore it is the only form ...
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Common terms and phrases
ancients Andromeda angle aphelion appear Aries astronomers atmosphere axis Boötes bright brilliant Canis Minor Capricornus Cassiopeia cause Celestial Sphere centre Cepheus circle color comet conjunction constellation Cor Caroli dark density Describe diameter disk earth east ecliptic equal equator equinoctial figure fixed stars full moon globe heat heavenly bodies heavens Hercules Herschel horizon inclined inferior conjunction inferior planet Jupiter latitude length light luminous lunar Lyra magnitude Mars mean distance Mercury meridian meteors miles moon's motion move naked eye nearly nebula Neptune night node north pole Orion parallax pass path penumbra perihelion Perseus Pisces polar Polaris precession rays revolve ring rising Saturn seasons seen shine side sidereal sidereal day solar day solar system solstice space spots summer sun's surface synodic revolution tance Taurus telescope theory tion Uranus Ursa Major Ursa Minor varies velocity Venus vernal equinox visible winter Zodiac