2020 is ramping up for a finale popularmechanics.com

This Is When the Universe Will Truly End – after the very last supernova explodes, it’s curtains. “In the far future long after star formation has ceased the universe will be populated by sparse degenerate remnants, mostly white dwarfs, though their ultimate fate is an open question. These white dwarfs will cool and freeze solid into black dwarfs while pycnonuclear fusion will slowly process their composition to iron-56.”