Collins, A. Frederick (Archie Frederick), 1869- · New York, London, D. Appleton and company · leaf 69
is useful to remember that none of the planets,except Mercury, ever twinkle, unless they are very near thehorizon. 48 THE BOOK OF THE STARS Third, by watching a planet closely for a few hours itwill be found to have moved a little. To note this changeof position the planet and some fixed star near… … Fig. 51.—Sizes op Planets Compared. can be seen at certain times of the year and in what part ofthe sky they are to be found. Seeing Mercury.—Mercury is so near the Sun that it canonly be seen with the naked eye at certain times. Mercuryshould be looked for just above the eastern horizon for…
Astronomy · Stars
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