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<p>[QUOTE="Vess1, post: 1429565, member: 13650"]I watched an interesting show a while back that said all the minerals deposited on Earth or any other planet would have originally came from exploding stars. It was extremely interesting. They showed how some stars go through the end of their lives by consuming themselves. As this happens, the composition of the star changes and then condenses towards the center. They said some elements had much shorter stages but that the star would eventually go through them all. They said for a brief time, the star generates gold and platinum. Eventually it explodes and expels all of it's elements out into the galaxy to be deposited on other planets, like Earth. </p><p> It explained why gold and platinum is rare compared to other elements. If the asteroids are remnants from an exploded star, they are probably loaded with PMs! As you say. It's still hard to believe that it would be possible to mine an asteroid and haul it all back. Would be really cool though. </p><p><br /></p><p> Little off topic but they also showed on a computer animated grid how relatively tiny our sun is compared to other stars in the universe. Our sun is like a little marble. The huge stars are probably responsible for most of the PMs we have. If they were all as small as our sun we might not have anything on Earth.</p><p><br /></p><p> They also said some stars pack the materials very densely and then burn out and turn into a pulsar(?) without exploding. They theorize the material is so dense that a small stone of it that could fit on a table spoon would weigh 100 million tons. If a small chunk of it were to ever collide with Earth, it would plow through the entire planet and come out the other side. So they say.[/QUOTE]</p><p><br /></p>
[QUOTE="Vess1, post: 1429565, member: 13650"]I watched an interesting show a while back that said all the minerals deposited on Earth or any other planet would have originally came from exploding stars. It was extremely interesting. They showed how some stars go through the end of their lives by consuming themselves. As this happens, the composition of the star changes and then condenses towards the center. They said some elements had much shorter stages but that the star would eventually go through them all. They said for a brief time, the star generates gold and platinum. Eventually it explodes and expels all of it's elements out into the galaxy to be deposited on other planets, like Earth. It explained why gold and platinum is rare compared to other elements. If the asteroids are remnants from an exploded star, they are probably loaded with PMs! As you say. It's still hard to believe that it would be possible to mine an asteroid and haul it all back. Would be really cool though. Little off topic but they also showed on a computer animated grid how relatively tiny our sun is compared to other stars in the universe. Our sun is like a little marble. The huge stars are probably responsible for most of the PMs we have. If they were all as small as our sun we might not have anything on Earth. They also said some stars pack the materials very densely and then burn out and turn into a pulsar(?) without exploding. They theorize the material is so dense that a small stone of it that could fit on a table spoon would weigh 100 million tons. If a small chunk of it were to ever collide with Earth, it would plow through the entire planet and come out the other side. So they say.[/QUOTE]
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