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ahout ahove the herizon altitude angle apogee Ascending Node astronomers axis centre cirele declinatinn deserihe diameter difference hetween divide divisinn dominical letter east eastero ecliptic eirele Epact equal equatinn equator equinox figore fixed star found hy Full Moon glohe heavenly hodies heavens hecause heen hefore heginning helow heors hoth hring inferior planets instroment Jupiter latitude length logarithm longitude and anomaly lunatinn mean anomaly mean longitude mean motinn Mean New Moon measore meridian minutes month moon's orhit moves round nearest noon numher ohject ohlique ohserved opposite Paob Parallax perigee perpendicular planet point of aries pole product hy Proh Prohlems proportinn remainder right ascensinn right line rising round the earth round the sun secant sheuld shew signs sine solar sorface statinn suhtract sun and moon sun's mean sun's place syzygy Tahle Tahle 13 tangent tinn tlie triangle troe Venus visihle westero whele witheut
Page 33 - No objection, says he, ariseth to that great luminary being inhabited ; vegetation may obtain there, as well as with us. There may be water and dry land, hills and dales, rain and fair weather, and as the light, so the season, must be eternal, consequently it may easily be conceived to be by far the most blissful habitation of the whole system.
Page 36 - ... below, seem to bid defiance to the laws of gravitation. Around the base of these frightful eminences, are strewed numerous loose and unconnected fragments, which time seems to have detached from their parent mass ; and when we examine the rents and ravines which accompany the over-hanging cliffs, we expect every moment that they are to be torn from their base, and that the process of destructive separation which we had only contemplated in its effects, is about to be exhibited before us in tremendous...
Page 40 - ... escape all observation, by reason of their paths traversing only that part of the heavens which is above the horizon in the daytime. Comets so circumstanced can only become visible by the rare coincidence of a total eclipse of the sun, a coincidence which happened, as related by Seneca, 60 years before Christ, when a large comet was actually observed very near the sun.
Page 4 - Instead, then, of one sun, and one world only in the universe, as the unskilful in astronomy imagine, that science discovers to us, such an inconceivable number of suns, systems, and worlds, dispersed through boundless space, that if our sun, with all the planets, moons, and comets, belonging to it, were annihilated, they would be no more missed by an eye that could take in the whole creation, than a grain of sand from the seashore ; the space they possess being comparatively so small, that it would...
Page 31 - ... 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...
Page 40 - ... must be at least many thousands. Multitudes, indeed, must escape all observation, by reason of their paths traversing only that part of the heavens which is above the horizon in the day-time.
Page 70 - The tropics are two small circles parallel to the equator at the distance of 23° 28' from it ; the northern, is called the tropic of cancer, and the southern, the tropic of Capricorn.
Page 36 - The climate of the moon must be very extraordinary : the alternation being that of unmitigated and burning sunshine, fiercer than an equatorial noon, continued for a whole fortnight, and the keenest severity of frost, far exceeding that of our polar winters, for an equal time.
Page 3 - that Copernicus, seized with a daring enthusiasm, laid his hands on the cycles and crystal orbs of Ptolemy, and dashed them to pieces. And that with the same noble phrenzy, he took the unwieldy earth, and sent her far from" the centre of the system, to move round the sun with the rest of the planets.