Introduction
This is the third of the Moon Origin posts. This post
explains the Fission Theory, which at the moment in scientific circles, has
some validity but not enough to be considered a main contender.
The following excerpt comes from the book “Modern Mysteries
of the Moon” by Vincent S. Foster.
The Fission Theory
“This is the idea that
an ancient, rapidly spinning Earth expelled a piece of its mass. This theory
was proposed by George Darwin (son of the famous biologist Charles Darwin) in
the 1800s and retained some popularity until Apollo. The Austrian geologist Otto
Ampherer in 1925 also suggested that the emerging Moon was cause for
continental drift.
It was proposed that
the Pacific Ocean represented the scar of this event. However, today it is
known that the oceanic crust that makes up this ocean basin is relatively
young, about 200 million years old or less, whereas the Moon is much older.
However, the assumption that the Pacific is not the result of lunar creation does
not disprove the fission hypothesis. This hypothesis also cannot account for
the angular momentum of the Earth-Moon system, which is the gravitational
torque between the Moon and the tidal bulge of Earth that causes the Moon to be
constantly shifted to a slightly higher orbit and Earth to be decelerated in
its rotation (Fig. 3.2 ).”
End (67).
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