Eventually though, things will start to fall apart. Our planet’s spin will slow, and the days will stretch out. Our Sun will grow older, and colder, and as its fuel runs out it will expand, becoming a red giant that swallows the earth whole. The sun will become unstable, and pulse in bursts of high-energy light, until it collapses right back down to a white dwarf, and carries on to glow like the embers at the end of a bonfire.

The entire universe won’t last forever either. The energy that created space and gave the universe the possibility to grow and evolve will keep pushing it outwards at ever accelerating rates, spreading matter into nothingness.

In the end there will be entropy.
No new stars will be born.
Black holes will evaporate.
The universe will die a quiet,
dignified death.

But in the grander scheme, all will not be lost. It is now pretty accepted the other universes exist, and if they do, then they may be able to be spawned from a universe such as ours. Out of the multiple creative events that have taken place during the journey of our universe, there may have been some exotic events that created fluctuations, ripples, vibrations of the right frequency to create seeds that would grow, or bubbles that would inflate, into entirely alternate universes.