The universe today is happy and healthy, with exciting things going on – but at some point the night will turn dark. Everything that once was, will peacefully sleep forever.
But what is the last thing that will ever happen? Let’s travel to the end of the universe…
/Doubt.
We are so far from experiencing these things our models are ridiculously extrapolative.
Why would gravitational collapse lead to supernova from a lead star? Why would gravity and density be equal throughout the life of a black dwarf? There are trillions of white dwarfs with more continuously being produced, would their expulsions not intact with each other?
After trillions and trillions (and and and and of course) would the cosmic expansion of the universe not have alleviated the density causing all cosmic pressures to be lessened?