Whereby the world that then was, being overflowed with water, perished: 2 Peter 3:6
The Bible speaks of three worlds. One has come and gone. That was the pre flood world. We now live in the second world. After this one is judged and destroyed by fire, there is the millennial world where righteousness will reign. Yet there is one earth that carries them all.
Imagine a blackboard, maybe the old fashioned slate ones. The blackboard remains, though many diagrams and writings are put upon it. How I long for the third one. It will not be erased.