Fourteen Weeks in Descriptive Astronomy |
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Page 75
... inferior conjunction , an observer at the sun would see it in the opposite part of the heavens from that in which it would appear to him if viewed from the earth . MOTIONS OF AN INFERIOR ... planet attains its greatest distance east or west ...
... inferior conjunction , an observer at the sun would see it in the opposite part of the heavens from that in which it would appear to him if viewed from the earth . MOTIONS OF AN INFERIOR ... planet attains its greatest distance east or west ...
Page 76
... inferior planet is never visible when in superior conjunction , as its light is then lost in the greater brilliancy of the sun . When in inferior conjunction , it sometimes passes in front. Fig . 19 . B ORBIT AND SEASONS OF MERCURY . 76 ...
... inferior planet is never visible when in superior conjunction , as its light is then lost in the greater brilliancy of the sun . When in inferior conjunction , it sometimes passes in front. Fig . 19 . B ORBIT AND SEASONS OF MERCURY . 76 ...
Page 77
... inferior planet . Suppose the earth to be at A , and the planet at B. Now , while the earth is passing to F , the planet will pass to D - the arc AF being shorter than BD , because the nearer a planet is to the sun the greater its ...
... inferior planet . Suppose the earth to be at A , and the planet at B. Now , while the earth is passing to F , the planet will pass to D - the arc AF being shorter than BD , because the nearer a planet is to the sun the greater its ...
Page 78
... inferior planet . - An inferior planet presents all the phases of the moon . At superior conjunction , the whole illumined disk is turned to- ward us ; but the planet is lost in the sun's rays : therefore neither Mercury nor Venus ever ...
... inferior planet . - An inferior planet presents all the phases of the moon . At superior conjunction , the whole illumined disk is turned to- ward us ; but the planet is lost in the sun's rays : therefore neither Mercury nor Venus ever ...
Page 79
... inferior planets ) ; at E , we should locate the planet at P on the ecliptic , in the sign Cancer ; but at G , it would appear to us at Q , in the sign Gemini , having apparently retrograded on ... planet the less it will THE PLANETS . 79.
... inferior planets ) ; at E , we should locate the planet at P on the ecliptic , in the sign Cancer ; but at G , it would appear to us at Q , in the sign Gemini , having apparently retrograded on ... planet the less it will THE PLANETS . 79.
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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