Any idea where the Moon came from?

Well I understand the orbit is "decaying" at only a few miles per year (correct me if I am wrong).
I hardly see how that will affect the eclipse's for longer than it takes to get a chocolate mocha at Starbucks, which I will agree can take an eternity.

 

what i am saying is you just happen to exist at a time when the moon and the sun match up.........nothing more.... nothing less

 

What an interesting coincidence. The 50,000 years or so window while the Moon decays away from its ability to produce corona and we just happen to be here to discuss it...

 

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Well thats fine BUT you must admit its a bit of a mystery still ... Those rocks
didn't survive ... but the Moon's did because presumably it did not have to deal with melting and all that? Why would the lava-lamp Moon NOT have to deal with the same geologic processes the Earth did? Why was it exempt?

So we are measuring rocks on Earth at only 3.6 billion years but the Moon rocks are half a billion years years older. Yet the Moon was produced from the Earth, same stuff, but the Earth was in the turmoil of metamorphasis and the Moon was not?

Maybe I should hack off the beer so I can understand this better.

 

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I understand your reasoning but would ask you if that is the "accepted" view, and of course whether anyone disagrees.

It seems like a large issue this.
I have never found a decent explanation and while I respect your obvious scientific knowledge I detect in your lines you are not sure either.

I must remain unconvinced about where the heck that rather large and beautiful ball up there came from.

 

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Well, I don't think they match up exactly anyway, but my point is this: Astronomy has enough statistics in it that a few coincidences (like the moon and sun matching up) should be expected. If they didn't match up, no one would stand around saying "Yep, there's nothing coincidental about that."

Think of all the extraterrestrial objects that DON'T eclipse the sun...

 

Yes but this one is extremely important don't you think, beyond statistics? In fact if you were to be accurate you would have to ask what are the probabilities that the only moon we have is the exact size of the Sun, and that would have to be several thousand to one based upon what orbits would be possible for a body that size.

 

So what? There are probably several thousand every-day phenomenon that AREN'T coincidental in some way for every one that is. Maybe if the odds were several BILLION to one, I'd be a little more impressed.

It seems to me to just be one of those every-day coincidences that people read about, say "Interesting...", and don't make anything more of it. I don't think there's really any other explanation that's necessary to explain the sun/moon coincidence other than "That's just the size and distance they happened to be."

 

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Rocks on the moon date older than earth rocks (but still *near* the same ages, give or take 1/2 a billion years) because on earth it is extremely difficult to find rocks that date back to the very formation of the planet, because on earth, rocks are constantly being destroyed and created by weathering processes (life, rain, etc...) and the crust is constantly being destroyed and renewed by volcanic processes (like subduction)...

The earth is a dynamic living planet, constantly undergoing change, and the moon has been geologically dead since very shortly after it's formation. So, hence, it will be much easier to find much older rocks there.

I took quite a few planetary sciences classes in college, and the impact theory of the moon's creation is the currently accepted explaination, and it seems to fit all the facts and explain much about the moon's present orbit, size, and composition... (scientists have named the mars-sized body that impacted the early earth "Orpheus"...)

Also, it's all really made of green cheese but NASA has covered that up every since they faked the moon landings!

 

Yes OK but the Earth has been aged has it not? ... 4.1 billion years I think. It doesnt matter HOW the Earth is aged, rocks or not.
Now if Moon rocks are older than the Earth is that not a real problem with assuming the Moon is somehow related to the Earth geologically?

 

If the moon rocks were *significantly* older than earth rocks, that would be a problem...but they are only a litttle less than 1/2 a billion years old...

oldest Earth rocks: ~ 4.1 by
oldest moon (and meteorite rocks): ~ 4.5 by

Now if we found moon rocks that were, say, 10 billion years old, then yes, that would be a *major* problem, and we'd have to seriously rethink everything we think we know about the solar system...

The problem is that it's just hard to find any really, really old rocks left on the earth's surface that haven't been destroyed by time or weather...but we still have found rocks as old a 4.1 by...

There is a good page about this here.