Science Forums 2

[alxian]

Originally Posted by Buffy

On the contrary, meteorites are mostly mostly iron, and thus are remnants of supernovas. The only "non-accreted remnants of the galaxy's initial ingredients are hydrogen and some helium, all heavier elements are created within stars and expelled by their explosions....

alxian's theory is certainly possible and is the core of panspermia theories.

Cheers,
Buffy

which you are saying either has the good stuff (the life fertilizer, and new heavy metals) being ejected by the star into the interstellar ether or 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.

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. 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. i'd like to think several cycles must have passed at least to create all the raw materials or our solar system. if thast the case life could have formed several cycles ago and been revived once the comets seeded the new planets with the life forms kept dormant from the last cycle.

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, but even in that long time life would remain dormant. how much of that interstellar stuff then might contain dormant life? considering how empty the milkyway seems to be it doesn't seem like interstellar space seeds many start systems..

i guess i'd need more information on the dynamics of a stars life cycle. like if its gravity grows with its size drawing those bodies in, baking them sterile of life before expelling them, and if they actually leave the system altogether or become wide arc comets coming back into the system very late in the life of the new star (nibiru perhaps? if you are a fan of sumerian mythos) all those rocks in the kuiper belt can't all be inert frozen gas balls, some must be remnants from before our sol formed.