Geocentric Theory vs. Heliocentric Theory—theOutcomeof a Bale Royale 69
Until the Apollo spacecraft placed a corner cube prism on the surface of the Moon,
modern scientists were still using the same method that ancient Greeks had used to cal-
culate the distance to the Moon. This method is easy to understand—just find one location
(A) from which the center of the Moon’s surface is visible at the zenith and another location
(B) from which the center of the Moon’s surface is visible at the horizon, at the same time of
day. If points A and B are at the same longitude, the difference in latitude between them will
be ∠B0C. Then, you can use the ...
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