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This brings to mind the Omega clouds from Jack McDevitt's novels, starting with: https://en.wikipedia.org/wiki/The_Engines_of_God https://en.wikipedia.org/wiki

by chiph 10y ago

This brings to mind the Omega clouds from Jack McDevitt's novels, starting with: https://en.wikipedia.org/wiki/The_Engines_of_God https://en.wikipedia.org/wiki/The_Engines_of_God

dsq 10y ago
...which in turn are reminiscent of Fred Hoyle's "The Black Cloud".