Something Dr. Tyson said on an episode of Cosmos was the suggestion that the inside of a black hole might hold another universe. And our universe is in fact the inside of a black hole in another universe, and so on. It made me start to think about what those other universes could be like. Would they be governed under the same physics and elements that we have or would it be something completely different that you'd never imagine in your wildest dreams? And if each universe starts with the birth of a black hole, what started the first black hole, or even the first universe? It completely boggles my mind, I've been thinking about it deeply the past three days.

If I had a ship of the imagination, that is what I would do with it.