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 255
times that ofour express trains diminishes to 10,000, to fifty, to one;while in the outermost part of its path the comet seems to 2JO Star-Land. creep aiong so slowly that we might think it had beenfatigued by its previous exertions. We have so often seen a stream of sparks stretchingout along the… … Fig. 70.—How the Comets Tail is Disposed. lie along the comets path, but is always directed outwardsfrom the sun. If you will draw a line from the sun tothe head of the comet and follow the direction of the line,it shows the way in which the tail is arranged. You willalso notice how the tail of the…
Astronomy
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