WHAT THE END OF THE UNIVERSE WILL REALLY BE

The universe will most likely perish in a state of total disorder known as Heat Death, when the direction of time as we experience it ceases to matter and just about anything may be possible. In this scenario, space just keeps expanding until galaxies fall apart, all the stars burn out and even atoms decay and disintegrate. At this time the universe will have reached a point of maximum entropy, or disorder, rendering the "arrow of time"- the difference between the past and the future- meaningless. Time still happens, but you have lost the directionality in some sense. The second law of thermodynamics or entropy is determining the outcome in this particular instance. If you can get to the final point where you can't create more entropy, then it's difficult to hypothesize that time is really meaningful as it relates to the structure of the universe. The Heat Death is a decay that could take a googol (10 to the power of 100) years. This is the probable outcome of the accelerated expansion of the universe. The Heat Death will only occur if the universe exists for an infinite amount of time.