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During a recent online discussion, one of the participants made the claim that a Dyson sphere would be limited in mass by the Chandrasekhar limit. Attempts to solicit evidence for this claim were essentially unsuccessful. Though I am no expert on astrophysics, the claim in question seems dubious, because I am unaware that any putative Dyson sphere would be in a state of matter in which its collapse would be prevented solely by electron degeneracy pressure, as is the case in white dwarves. Moreover, I am unaware of any applications of the Chandrasekhar limit to any bodies other than white dwarves, so the claim makes no sense to me. Is there any way the material of a Dyson sphere could possibly attain the immense densities found in the insides of white dwarves?

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  • $\begingroup$ Almost a double of your other Q.The Chandrasekar limit is not valid as it isn't for a hollow sphere of a fictional material. $\endgroup$ – Alchimista Dec 15 '18 at 9:04
  • $\begingroup$ So he was completely off-base? Thought as much. $\endgroup$ – readyready15728 Dec 16 '18 at 10:42

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