FogeltheVogel t1_j69weaz wrote
Reply to comment by ManyThingsLittleTime in Is there an upper limit to structure size in a vacuum? Could a sufficiently advanced civilisation build a galaxy sized structure in space or would it become too massive and collapse in on itself? by CubanHermes
A few planets is a tiny fraction of the mass of a start system. How exactly is that an example of a galaxy sized structure needing multiple galaxies worth of material?
ManyThingsLittleTime t1_j6afcrz wrote
It is an example to demonstrate how much mass is needed to accomplish even a small scale version of what their talking about. It's an analogy.
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