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Old October 24th 12, 01:10 PM posted to alt.astronomy,sci.astro,sci.physics
HVAC[_3_]
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Default Proof The Moon was Captured

On 10/24/2012 7:17 AM, Painius wrote:

Here is yet another possibility - the GCH:
In the Gay Capture Hypothesis (GCH), the Moon formed in almost the
same orbit as the Earth. The Earth was out front at first and
absorbed nearly all of the iron and other good stuff, while the
trailing Moon absorbed only the dregs.

The Earth's and Moon's Solar orbits were so close together that it
took a very long time for the Earth to finally come all the way back
around and catch up to the Moon. When it did catch up, as it
approached the Moon, it gently captured (and was captured by) the
smaller orb. The Moon then began a slow and steady scalloped orbit
with the Earth around the Sun...

http://www.math.nus.edu.sg/aslaksen/...ng/convex.html

At first, the Moon was a distance from Earth that was just a little
farther than the Roche limit, so it did not break up from tidal
pressures. At that time the Earth and Moon rotated very fast - a day
on Earth back then was a bit less than 8 hours long. Due to tidal
friction, both Earth's and Moon's spin slowed down. As they slowed
their spin speeds, the Moon also got a little farther away from Earth
each year. Later, the Moon's rotation speed slowed to a point where
it was synchronized, "tidal locked" with Earth. After that, the Moon
always showed the same face toward the Earth.

Ever since the Earth's and Moon's gentle capture of each other, and
down to the present day, the Earth and Moon have exchanged places each
month in their orbits around the Sun. Part of the month finds the
Moon closer to the Sun, and the other part of the month the Earth is
closer to the Sun. As they slowly change their relative orbital
positions, at one point the Earth is out in front and leads the Moon
around the Sun. Then about two weeks later, the Earth lags and the
Moon goes out in front.

The Earth-Moon orbital relationship - It's not your father's two-body
problem anymore.



A quick study on orbital mechanics quickly puts the lie to your argument
for a Gay Capture Theory. Sorry.






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