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Aug 2, 2015 at 15:23 comment added LDC3 The gravitational acceleration at the photosphere is 28g. Since it is unlikely that there is no hydrogen above the photosphere, there would be a significant portion of atoms on the sun that should be counted.
Jul 23, 2015 at 18:42 comment added Jim You are technically correct, the best kind of correct. +1
Jul 23, 2015 at 17:01 history edited Floris CC BY-SA 3.0
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Jul 22, 2015 at 23:11 comment added Alex That's funny, I asked a trick question and didn't know it.
Jul 22, 2015 at 22:59 comment added Floris @Alex indeed if you follow the link it states clearly that it estimates a lower limit for the number of atoms in the universe. Note also that the answer really addresses "nuclei" since the sun is a plasma and therefore not really comprised of atoms. And it contains the majority of mass in the solar system.
Jul 22, 2015 at 22:41 comment added Alex 10^57 atoms in the solar system according to Floris, times 10^11 stars in the milky way, times 10^11 galaxies in the observable universe equals 10^77 atoms. On the low end I think.
Jul 22, 2015 at 22:37 history answered Floris CC BY-SA 3.0