When scientists say that the universe is expanding, does that mean it’s a finite size and there is something outside of the universe? – Senia Sheydvasser October 26, 2020science, spacehistoryscoper https://www.quora.com/When-scientists-say-that-the-universe-is-expanding-does-that-mean-its-a-finite-size-and-there-is-something-outside-of-the-universe/answer/Senia-Sheydvasser