From my poor understanding of a Physics degree: the "age" is just counted from w...

		flumpcakes on July 13, 2023 \| parent \| context \| favorite \| on: Age of universe at 26.7B years, nearly twice as ol... From my poor understanding of a Physics degree: the "age" is just counted from when everything existed in the same space, before it's rapid expansion. Although, can you say it expanded? It didn't expand into anything because space does not exist outside of the universe. Or do we say it 'expanded' because the distance between the constituent parts inside of the universe grew? It's not good to think about really.

It's the second one. The individual parts moved away from each other. And there's nothing "not good" about thinking about it.