Things that make you go hmmmmmm....pic.twitter.com/Gbl2AlpXsV
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That makes sense. I suppose my interest in the images is more poetic and aesthetic than scientific, but your point is well taken. What's the good reason it looks like a polymerized sponge and where can I see such images?
Have a look at the blogpost I linked above! The reason is that polymerization works by combining a material that contracts in itself with a gas that expands and fills the gaps. In the universe, the contracting stuff is gravitating matter and the expanding gas is expanding space.
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