Fourteen Weeks in Descriptive Astronomy |
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Page 45
... Mercury , Venus , Earth , Mars , Jupiter , Saturn , Uranus , Neptune . 3. The minor planets , at present one hundred and seventeen in number . ( The paths of some extend a little outside the Zodiac . ) 4. The satellites or moons ...
... Mercury , Venus , Earth , Mars , Jupiter , Saturn , Uranus , Neptune . 3. The minor planets , at present one hundred and seventeen in number . ( The paths of some extend a little outside the Zodiac . ) 4. The satellites or moons ...
Page 65
... Mercury to strike the sun in this way , it would generate sufficient heat to compensate the loss by radiation for seven years . Many suppose that the heat of the sun is gradually diminishing . Of this we may be assured , there is enough ...
... Mercury to strike the sun in this way , it would generate sufficient heat to compensate the loss by radiation for seven years . Many suppose that the heat of the sun is gradually diminishing . Of this we may be assured , there is enough ...
Page 67
... Mercury , Venus , the Earth , and Mars as belonging to the interior , and Jupiter , Saturn , Uranus , and Neptune to the exterior group , we shall find that they differ in the following respects : 1. The interior planets , with the ...
... Mercury , Venus , the Earth , and Mars as belonging to the interior , and Jupiter , Saturn , Uranus , and Neptune to the exterior group , we shall find that they differ in the following respects : 1. The interior planets , with the ...
Page 69
... Mercury by a mustard - seed , at a distance of 82 feet ; Venus by a pea , at a distance of 142 feet ; the Earth , also , by a pea , at a distance of 215 feet ; Mars by a small pepper - corn , at a distance of 327 feet ; the minor ...
... Mercury by a mustard - seed , at a distance of 82 feet ; Venus by a pea , at a distance of 142 feet ; the Earth , also , by a pea , at a distance of 215 feet ; Mars by a small pepper - corn , at a distance of 327 feet ; the minor ...
Page 70
... MERCURY VENUS EARTH NEPTUNE URANUS be at 880 feet ; the aphelion distance of Donati's comet of 1858 at 6 miles ; and the nearest fixed star at 7,500 miles . According to this scale , the daily motion of Vulcan. COMPARATIVE SIZE OF ...
... MERCURY VENUS EARTH NEPTUNE URANUS be at 880 feet ; the aphelion distance of Donati's comet of 1858 at 6 miles ; and the nearest fixed star at 7,500 miles . According to this scale , the daily motion of Vulcan. COMPARATIVE SIZE OF ...
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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