Time is an interesting thing. It's the thing that dominates our life. When we want to describe time, we can see describe it as the thing that is between two points, that are in two different moments. Time can also describe as that thing that started in the Big Bang. Time is the change of the universe. And when the universe reaches stable form, time ends. So time is the change in atoms and subatomic particles. It started during the Big Bang, And the cooling universe is one of the things, that we can use as a description of time. When all energy is gone time ends. Cosmic inflation is the thing that causes the particles of material are turning to wave motion. And when the last electron and quark are turned to wave motion, the universe reaches its stable form, and that is the end of time. That requires that the universe is open and dark energy pushes it larger and larger. And in the open universe, the expansion continues forever. We know that the energy level of the particle is dire