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> Intra-system panspermia is an interesting and seemingly credible idea another interesting idea is that our Sun is not hot enough to produce any elements heav
by 867-5309 6y ago
> Intra-system panspermia is an interesting and seemingly credible idea
another interesting idea is that our Sun is not hot enough to produce any elements heavier than iron, meaning that trace elements in you and I are of extra-solar system origin
- whatshisface 6y agoPanspermia is an idea, that's a fact. Our sun makes helium. It doesn't even make helium that we use - we get our helium from underground deposits filled by radioactive decay.
- 867-5309 6y agounsure what your point is
- saagarjha 6y agoPanspermia isn't widely accepted, but stellar nucleosynthesis/supernovae are generally accepted to be the source of the heavy elements.
- dwohnitmok 6y agoI think parent's point is that, to an extremely accurate approximation, none of the elements on Earth come from the Sun. Hence, while it's true that trace elements didn't come from the Sun, it's weird to focus on that because nothing else did either. EDIT: And it's also weird to tie this to the fact that the Sun won't produce elements heavier than iron through normal (i.e. non-nova) fusion late in its life since that has nothing to do with it.
- TheSpiceIsLife 6y agoI would have assumed all of the material in the solar system didn't come from our sun? Other than what's been blown off the sun as solar wind. I mean, Earth didn't originate from material from the stella explosion of Sol.
- 867-5309 6y agoindeed, and humans are a material part of Earth
- prox 6y agoThe sun is a second generation star, that is it formed out of earlier stars who did make those heavier elements.
- KineticLensman 6y agoAll of the material in the Solar System - sun and planets - formed from the same original cloud of atoms. This cloud itself included atoms generated by earlier generations of stars. The different elemental composition of the Sun and planets was partly driven by the physics of processes operating as the system matured.
- LargoLasskhyfv 6y agoWe are stardust, risen like a phoenix from the ashes of giant suns exploded eons ago...