What happened to the massive black hole?

At the moment of the Big Bang, all the mass/energy in the universe was located at one place. That must have been one massive black hole. We have learned that nothing can escape from a black hole. How could that black hole explode or expand?

This is one of the mysteries that have puzzled scientists for a century.

The new four-dimensional model of the universe explains the logic of what happened. If you read the book A New Understanding of the Universe, you will understand the solution to this great mystery.