Currently it’s pretty commonly believed that the end state of the universe is decayed particles moving away from every other particle at faster than the speed of light, therefore existing in an eternal and inescapable void. If you only have one particle you can’t do calculations.
Currently it’s pretty commonly believed that the end state of the universe is decayed particles moving away from every other particle at faster than the speed of light, therefore existing in an eternal and inescapable void. If you only have one particle you can’t do calculations.
That’s one possibility. It depends what the value of dark energy is, which isn’t yet known.