Electro astronomical atlas ... with explanatory notes, questions and answers (1874)
Spoor, J. W. (Joseph W.) · Albany, N.Y., Weed, Parsons and Company · leaf 88
its orbit ?A. It is 901,064,000 miles. 52 ELECTRO-ASTRONOMICAL ATLAS. Q. What is the mean distance of Mars from theEarth ?A. He is 50,000,000 miles.Q. Is he then in conjunction or opposition ?A. In opposition = Q. Which way do we look to see him ?A. In the direction opposite to the Sun % Q. Then… … LESSON XXXIV. Analysis.— When take place — Cause of brilliancy — Distance one side of Orbit — Inclination — Rate of Motion — Light, comparedwith that of Earth — Difference of Diameters — Density, compared with the Earth — Difference of Weight — Ratio from Sun ofthe Orbits of Planets…
Astronomy
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