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Originally Posted by alxian
...the stellar crocpot actually cooks up quite a bit of material with each cycle, meaning even if sol is only the second cycle that the first star in our system created quite a bit of raw material. if we are around after sol we could see how much raw material sol spits out for the next cycle.
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Uh, there's no reason to think that there was a "first cycle" at all, or that *all* the material came from this first cycle. You're assuming that all stars have similar lifespans to our Sun, when in fact the massive stars that go supernova come and go in the blink of a cosmological eye. We're probably made from stuff from many, many "cycles" not just of the material local to us but spewed out from many many different directions!
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Originally Posted by alxian
but i mean given our systems large amount of inner planets (compared to what ZERO such multiplanetary systems with tiny planets like merc venus terra and mars, we've so far detected only large jupiter sized planets, maybe in time we'll find an analogue to or own system but thus far its looking like our dust cloud was very big before sol formed. ..
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the only reason that we have not seen rocky inner planets is that at this point its provable that we don't even have the resolution to detect them! You can't therefore make any assumptions that the existence of this material is rare at all!
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Originally Posted by alxian
if thats the case and unless heavy metals can be formed by planetary accretion, it doesn't explain all the heavy metals and radioactive materials that must have existed before our solar system formed.
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So, these statements don't make sense because your assumptions are wrong. Moreover, its provable that without temperatures at least approaching stellar levels that you can't fuse neuclei into higher elements, so this pretty much assures that you need stars to make stuff for rocky planets...
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Originally Posted by alxian
only if the star was small and didn't actually supernova but just farted out of existance could life remain within the same stellar cloud while another star formed. for span spermia then life like spore on the wind would require billenia to cross the either perhaps never reaching another star system...
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Here you're leaving out the fact that collisions between stellar systems are in fact quite common, which causes lots of mixing between systems (especially as you get closer to the galaxy's core) even if the star is small and "farts out"....
Cheers,
Buffy
