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2 votes
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47 views

How much of the hydrogen in our sun will never participate in fusion? What about larger stars? [duplicate]

From what I gather, only red dwarf stars are fully convective, and will use up pretty much all of their hydrogen.... Is there a chart or list somewhere that shows the percentage of hydrogen that is ne …
Kurt Hikes's user avatar
  • 5,585
4 votes
2 answers
210 views

Do brown dwarf 'stars' fuse simple hydrogen (p-p reaction) at all?

I sometimes read that only deuterium-deuterium fusion can occur in brown dwarfs... And maybe deuterium-proton fusion? To He-3? …
Kurt Hikes's user avatar
  • 5,585
0 votes
2 answers
95 views

Does most of the Sun's energy and light come from its black-body temperature, due to its mas...

After all, a star must be at least four million Kelvin in its core to initiate sustained fusion, right? … Without any fusion/decay energy? …
Kurt Hikes's user avatar
  • 5,585