Lockyer, Norman, Sir, 1836-1920 · London : Macmillan and Co. · leaf 40
THE STARS AND NEBUL.^. 19 a point situated between them; while the two pahsconsidered as two singlestars, perform a nuicli largerjourney round a point situ-ated between them. It may be stated roundlythat the wider pair will com-plete a revolution in 2.000years ; the closer one in halfthat time ;…
Astronomy · Solar system
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