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Posted on 06/01/2009 6:59:33 PM PDT by SunkenCiv
back when the moon formed, the earth was spinning A LOT FASTER than it is now, therefore when the moon formed, geosync orbit was a lot closer to the surface than it is now.
when the moon formed, it had to be outside geosync at that time.
Sorry, you’re just dead wrong.
from wiki
link
http://en.wikipedia.org/wiki/Orbital_decay
[edit] By tidal effects
An orbit can also decay by tidal effects when the orbiting body is large enough to raise a significant tidal bulge on the body it is orbiting and is either in a retrograde orbit or is below the synchronous orbit. The resulting tidal interaction saps momentum from the orbiting body and transfers it to the primary’s rotation, lowering the orbit’s altitude until frictional effects come into play.
fyi “below synchronous orbit” is the same as “inside geosync orbit”
How about this link
http://www.associatedcontent.com/article/72725/the_moon_is_moving_away_from_the_earth.html
The Moon is Moving Away from the Earth
...Now, the tidal bulges that are created on the Earth, by the moon, are not exactly located directly below the moon. Instead, they are located slightly ahead of the moon, and because the Earth is spinning faster than the moon, this causes the gravitational force on the tidal bulge to pull on the moon, slightly increasing its’ orbital velocity. When the moons’ orbital velocity increases, the Earths’ rotation slows. It’s this unique relationship between these two bodies, that is causing the moon to slowly move away from the Earth...about an inch a year. Although it’s not noticeable now, the scientist say in about a million years, the effects will be very noticeable.
WE'RE ALL GONNA *DIE*
AAAAAAAAAAAAAAGH!
one more thing, I may not be an “astronomer” but I am a physicist and I did stay at a Holiday Inn Express last night too.
actually, when the moon moves away, the tides will get lower disrupting and killing off all kinds of mini ecosystems that depend on large tides.
Oh, yes. Please do forgive my obvious blunder...
*EVERYTHING* IS GONNA DIE!!!
AAAAAAAAAAAAAAAAAAAGH!
An orbit can also decay by tidal effects when the orbiting body is large enough to raise a significant tidal bulge on the body it is orbiting and is either in a retrograde orbit or is below the synchronous orbit.and
...this causes the gravitational force on the tidal bulge to pull on the moon, slightly increasing its' orbital velocity. When the moons' orbital velocity increases, the Earths' rotation slows.and there's this:
Since the Earth is causing a bulge and accelerating the Moon, that body should be getting closer, but it's in a very slow process of escape. Those figures on spin rates etc differ from this:The MoonThe moon is Earth's only natural satellite... The Moon's orbit is expanding over time as it slows down (the Earth is also slowing down as it loses energy). For example, a billion years ago, the Moon was much closer to the Earth (roughly 200,000 kilometers) and took only 20 days to orbit the Earth. Also, one Earth 'day' was about 18 hours long (instead of our 24 hour day). The tides on Earth were also much stronger since the moon was closer to the Earth.
Since the hypothesized impact was 4 billion years ago, and by this data, the Moon has acquired more than half its altitude in one-tenth that time, there's no way the Moon originated in Earth orbit.When the Days Were ShorterPresent-day nautilus shells almost invariably show thirty daily growth lines (give or take a couple) between the major partitions, or septa, in their shells. Paleontologists find fewer and fewer growth lines between septa in progressively older fossils. 420 million years ago, when the moon circled the earth once every nine days, the very first nautiloids show only nine growth lines between septa. The moon was closer to the earth and revolved about it faster, and the earth itself was rotating faster on its axis than it is now. The day had only twenty-one hours, and the moon loomed enormous in the sky at less than half its present distance from earth.
by Larry Gedney
Alaska Science Forum
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