ELi5 If the universe is expanding, what is it expanding into? Submitted by cashmoneyhash t3_12776bk on March 31, 2023 at 2:26 AM in explainlikeimfive 57 comments 20
SuspiciousAct6606 t1_jedivyv wrote on March 31, 2023 at 5:57 AM Reply to comment by [deleted] in ELi5 If the universe is expanding, what is it expanding into? by cashmoneyhash Is there a boundary between space and whatever is not space? Permalink Parent 2
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