ELI5: Explain Like I'm 5

Conformal cyclic cosmology

Conformal cyclic cosmology is a theory which suggests that the universe is repeating itself over and over again. In simple terms, it suggests that at the end of each cycle, the universe looks the same as it did at the start of the cycle - like a loop. It also suggests that the same events will happen again, in the same order and the same way, over and over again.