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To: ml/nj
From the exploded Super Nova that created our part of this end of the galaxy.

They always have a supply of the heavier elements.

That stuff comes in the form of tiny dust particles in and amongst the gas clouds.

Eventually gravity pulls it back together; it all heats up; the dust particles melt from the heat of gravitational compaction; and suddenly it all settles out with most of the heaviest stuff at the bottom (uranium, gold, iron), and the lighter stuff at the top (silicon, carbon, nitrogen).

From that point on it just takes a bit of time to resettle more of these materials until you get a hard surface crust.

We get the rest of our iron and other heavy metals through collisions with smaller bodies ~ small planets, meteors, moons, space junk, and so on.

24 posted on 12/08/2010 12:39:04 PM PST by muawiyah
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To: muawiyah
it all heats up

Sure it does!

You don't really beleive this stuff, do you?

ML/NJ

26 posted on 12/08/2010 12:41:21 PM PST by ml/nj
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To: muawiyah

True.

We are literally made from the dust of stars.


36 posted on 12/08/2010 1:05:20 PM PST by agere_contra (...what if we won't eat the dog food?)
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