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 105
into consid-eration, this time, that there is an intervening massupon which the attracting bodies are exerting theirinfluences. Let A and B in the accompanying diagram representany two heavenly bodies of equal mass, distant fromeach other any number of astronomical units for meas-uring celestial…
Astronomy
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