CubanHermes OP t1_j6ak5ph wrote

>Galaxies are not dense on average, because of the space between stars.

I get that, hence the question as to whether it is theoretically possible to build a structure the size of a galaxy with the space filled in by 'structure' without it collapsing in on itself. It's a hypothetical question so sourcing materials isn't the object of the question; the point is whether, despite the fact it would take several billion years to build at current space traversal times, it would be possible with our current understanding of our universe.


CubanHermes OP t1_j693pjj wrote

Ok, so I just need FTL travel, many galaxies worth of materials, some way to heat the place and billions of workers and we can make a hellish galaxy sized Ikea flat pack colony. Excellent.