It's not expected to happen anytime soon, but one scientist has calculated when the universe will end. As they become denser, these stars will become "black dwarf" stars capable of producing iron in their cores. CLOSEST EVER, MYSTERIOUS 'FAST RADIO BURST' FOUND 30,000 LIGHT-YEARS FROM EARTHThe other approximately 99% of stars will remain black dwarfs. The largest black dwarfs will go supernova first, followed by smaller ones, at which time the universe will likely be a giant emptiness, completely unrecognizable. “It’s hard to imagine anything coming after that, black dwarf supernova might be the last interesting thing to happen in the universe," Caplain stated.

Source: Fox News August 16, 2020 14:37 UTC