… as a space-time bubble that popped up inside an even bigger metaverse?
Metaverse = a bigger turtle:
In this picture, our universe arose from quantum fluctuations in a much bigger cosmos called a metaverse. The quantum effects caused a phase transition in the fabric of the metaverse, and our universe popped into being, like an air bubble forming in boiling water.
Can we know if this is true?
Probably not, says Marc Kamionkowski, a co-author of the 2008 paper and now at Johns Hopkins University in Baltimore, Maryland. The bubble walls are expanding at the speed of light, so we could never catch up with them.
Is it fun? Yes, if you must watch water boil (for safety reasons, of course). 😉