To the moon and back in ninety days : a thrilling narrative of blended science and adventure (1922)
Brown, John Young, 1858-1921, Lunar Publishing Company. pbl · Providence, Kentucky : Lunar Publishing Company · leaf 112
FIG. 19. STAR CLUSTER. (Yei-kes Observatory.) … FIG. 20. GREAT NEBULA IX ANDROMEDA. (Yerkes Observatory.) 64 TO THE MOON AND from which we readily deduce the equation,81M M x^ (240000—x) which, when solved, gives for results X = 216000240000—x= 24000 ^According to Newtons law a point of equilibriumexists somewhere in the direct line connecting…
Astronomy
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