V1 When the Universe becomes too big, The constant gravity will cause it to collapse. This will cause the Big Crunch To happen at a certain date, after 5078. V2 What if pota**ium changes, and we need a new chemical there? Also sodium Hydrogen And Helium? CHORUS What about hesium - a mixture between helium and an unknown chemical? Hodrium - another mixture between hydrogen and an unknown chemical? Physics will eclipse Chemistry. How can we verify the big bang? SOLO Hesium won't exist because helium won't be given an extra proton. Hodrium won't exist because hydrogen won't be given an extra proton. Keep Chemistry because It is still about the fundamental building blocks. We weren't there during the big bang but it must have occurred.