Star-land : being talks with young people about the wonders of the heavens (1891)
Ball, Robert S. (Robert Stawell), Sir, 1840-1913 · London ; Paris : Cassell & Co. · leaf 348
ourney was commenced. In thenebular railway the passengers would almost require such awarning. Let the train start at a speed of a mile a minute, youwould think, surely, that it must soon cross the ring. Butthe minutes pass, an hour has elapsed ; so the distance mustbe sixty miles, at all events.… … Fig. 85.—The Ring Nebula in Lyra, under different telescopic powers. unabated speed of a mile a minute, the journey wouldcertainly not have been completed. Nor do I venture tosay what ages must elapse ere the terminus at the otherside of the ring nebula would be reached. A cluster of stars viewed…
Astronomy
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