Uranography: Or, a Description of the Heavens; Designed for Academies and Schools; Accompanied by an Atlas of the Heavens, Showing the Places of the Principal Stars, Clusters, and Nebulæ |
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Common terms and phrases
3d magnitude 8th magnitudes Andromeda aphelion apparent diameter appear Arcturus astronomers axis body Boötes bright called Cassiopeia centre Cepheus Ceres comet components constellation constellation lies Cor Caroli degrees high Denebola disc diurnal motion double star earth east eccentricity eclipse equator FABLE fixed stars full moon greater greatest grees high group of stars head heavens Herschel horizon inclination inferior planets Juno Jupiter light line drawn Lion Mars mean distance Mercury meridian miles moon moon's nearly nebula nitude nodes northern observations orbit Orion Pallas Pegasus perihelion period Perseus planet Plate VII pole portion principal stars proper motion R. A. and Dec remarkable revolution Right Ascension ring satellites Saturn seen shadow situated small stars smaller solar southern stellar system Struve sun enter sun's supposed surface Swan tail telescope three stars tides tion triangle Uranus variable star Venus Vesta Virgin visible yellow zenith
Popular passages
Page 199 - The squares of the periods of revolution of any two planets are proportional to the cubes of their mean distances from the sun.
Page 16 - The circumference of every circle is supposed to be divided into 360 equal parts, called degrees ; each degree into 60 equal parts, called minutes ; and each minute into 60 equal parts, called seconds.
Page 193 - NODES are the two opposite points where the orbit of a planet seems to intersect the ecliptic. That where the planet appears to ascend from the south to the north side of the ecliptic, is called the ascending or north node...
Page 45 - The inference is irresistible, that they are masses of chaotic matter, in a highly diluted or gaseous state, gradually subsiding, by the mutual gravitation of their particles, into stars and sidereal systems. This is the hypothesis of Laplace with regard to the origin of the solar system, which he conceived to be formed by the successive condensations of a nebula whose primeval rotation is still maintained in the rotation and revolution of the Sun, and all the bodies of the solar system, in the same...
Page 195 - An eclipse of the sun is an occultation of the whole or part of the face of the sun. occasioned by an interposition of the moon between the earth and the sun; thus all eclipses of the sun happen at the time of new moon.
Page 316 - ... but are variously affected by the action of the sun, which brings them on sooner, when the moon is in her first and third quarters ; and keeps them back later, when she is in her second and fourth. Because in the former case the tide raised by the sun .alone would be earlier than the tide raised by the moon, and in the latter case later.
Page 266 - Milton, speaking of the divinities of the Assyrians and other nations, says they had general names of Baalim and Asteroth, those male, these female. The entire organisation of Babylonia was attributed by tradition to Belus. Jupiter was regarded as the king of heaven and earth. His worship was universal, and surpassed in solemnity that of all the other deities. His temples were numerous, and he had many oracles, of which the most renowned were those of Dodona in Epirus, and Ammon in the Libyan Desert....
Page 289 - Divine wrath, was so frightened at its appearance that he ordered public prayers to be offered up in every town, and the bells to be tolled at the noon of each day, to warn the people to supplicate the mercy of Heaven. He at the same time excommunicated both the comet and the Turks, whose arms had lately proved victorious against the Christians, and established the custom, which still exists in Catholic countries, of ringing the church bells...
Page 38 - ... and yet the other stars about them, of the third and fourth magnitudes, remained the same. I have observed many more changes among the fixed stars, even to the number of a hundred, though none of them are so great as those I have showed.
Page 192 - PLANETS are opaque bodies, similar to our earth, which move round the sun in certain periods of time. They shine not by their own light, but by the reflection of the light which they receive from the sun. The planets are distinguished into primary and secondary. 96.