Letters on Astronomy, Addressed to a Lady: in which the Elements of the Science are Familiarly Explained in Connexion with Its Literary History: With Numerous Engravings |
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Page 89
... million or a thousand millions of miles off . Although the bodies seen in the sky are in fact at dis- tances extremely various , -some , as the clouds , only a few miles off ; others , as the moon , but a few thousand miles ; and others ...
... million or a thousand millions of miles off . Although the bodies seen in the sky are in fact at dis- tances extremely various , -some , as the clouds , only a few miles off ; others , as the moon , but a few thousand miles ; and others ...
Page 91
... millions of miles apart , see each star in one and the same place in the heavens . It is by means of parallax , that astronomers find the distances and magnitudes of the heavenly bodies . In order fully to understand this subject , one ...
... millions of miles apart , see each star in one and the same place in the heavens . It is by means of parallax , that astronomers find the distances and magnitudes of the heavenly bodies . In order fully to understand this subject , one ...
Page 101
... millions of miles . It may perhaps seem in- credible to you , that astronomers should be able to de- termine this fact with any degree of certainty . Some , indeed , not so well informed as yourself , have looked upon the marvellous ...
... millions of miles . It may perhaps seem in- credible to you , that astronomers should be able to de- termine this fact with any degree of certainty . Some , indeed , not so well informed as yourself , have looked upon the marvellous ...
Page 102
... millions of miles is indeed a vast distance . No human mind is adequate to comprehend it fully ; but the nearest ... miles per hour , more than a thousand years to reach the sun . The diameter of the sun is towards a million of miles ...
... millions of miles is indeed a vast distance . No human mind is adequate to comprehend it fully ; but the nearest ... miles per hour , more than a thousand years to reach the sun . The diameter of the sun is towards a million of miles ...
Page 108
... millions of miles ? Much less can they be supposed to be the depositories of such devouring fire , when any thing in the form of clouds , floating in our atmosphere , is at once scattered and dissolved by the accession of only a few ...
... millions of miles ? Much less can they be supposed to be the depositories of such devouring fire , when any thing in the form of clouds , floating in our atmosphere , is at once scattered and dissolved by the accession of only a few ...
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Common terms and phrases
angle appear ascertain astronomers atmosphere attraction axis called celestial centre circle comet conjunction constellation degrees diameter direction discovery disk distance diurnal motion diurnal revolution doctrine double stars earth ecliptic equal equator equinox exhibit fact fixed stars force Galileo globe gravity greater greatest half Halley's comet heavenly bodies heavens Hence Herschel horizon inferior conjunction instrument John Herschel Jupiter Kepler latitude laws length less light longitude lunar lunar eclipse magnitude measure Mercury meridian meteors millions of miles minutes moon moon's motion move nearer nearly node objects observations opposite orbit parallax passing perihelion period phenomena planetary planets pole respect revolve right ascension ring round satellites Saturn seen shadow side solar system space spectator sphere sun's superior planets supposed surface telescope thousand tides tion truth Tycho Tycho Brahe universal gravitation Uranus velocity Venus vernal equinox visible west to east