(February 3, 2022 at 9:49 am)polymath257 Wrote:(February 2, 2022 at 5:46 pm)Jehanne Wrote: We live in an expanding Universe, correct? What, exactly, is the Universe expanding in to?
Answer: the future.
Literally, this is the geometric answer.
True, but, if the Universe's volume is finite at the beginning, then, it will remain so forever. As such, distances on intergalactic scales are increasing, and, hence, so is its volume.