Didn't it all come from space?

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Offline Eric A. Taylor

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Didn't it all come from space?
« on: 10/03/2011 06:23:49 »
In this week's NS they had a news item stating findings that show evidence that the building blocks of life came from space. Considering what we know of planet formation, didn't every single atom on the Earth come from space?
I was once a STAR!!! Well part of a star at least.

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Offline burning

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Didn't it all come from space?
« Reply #1 on: 10/03/2011 16:49:53 »
I haven't read the article, but I suspect the distinction is not whether the atoms came from space (which as you point out they did), but whether molecules of some minimum complexity formed in space and then came to Earth or whether all the complexity came about on Earth