# What is the hottest temperature the universe has ever been?

Jun 20, 2017

It is thought that the hottest the universe has been is ${10}^{32} K$.

#### Explanation:

The hottest the universe has been is ${10}^{- 42}$ seconds after the Big Bang when the temperature was ${10}^{32} K$. That temperature can never be achieved again unless similar conditions occur.

It is thought that the fundamental forces separated at a temperature of about ${10}^{28} K$. We can never approach those temperatures again.

So, the temperature just after the Big Bang of ${10}^{32} K$ is the absolute hot as far as our universe is concerned.