I’ve been having deep & meaningful conversations with my uncle & apparently there are three main ideas of how the Universe ends: the big Freeze (current main/most popular), Big rip and the Big Crunch. 1- Big Freeze - Universe expands until no new stars and galleries can be made. So they slowly all die out leaving a universe of no light and temp. 2- Big Rip - the expansion happens includes at the atomic level as well and very slowly rips apart. 3- Big Crunch - universe expand to a point that gravity starts to react back pulling everyone back again in and everything crunches back to nothing. Thoughts?