No, the Big Bang was not a black hole. The Big Bang refers to the event that marked the beginning of our universe. It is a theoretical model that describes the rapid expansion of space and the subsequent development of the universe over time.
According to the Big Bang theory, the universe began as an extremely hot and dense state, often referred to as a singularity. However, this singularity is not the same as the singularity found in a black hole. In the context of the Big Bang, the singularity represents a point of infinite density and temperature where the laws of physics, as we currently understand them, break down.
During the Big Bang, the universe rapidly expanded and cooled down, allowing particles and energy to form and eventually develop into the galaxies, stars, and other structures we observe today. This expansion is fundamentally different from the gravitational collapse that leads to the formation of a black hole.
While both the Big Bang singularity and a black hole singularity represent extreme conditions where our current theories of physics break down, they are conceptually distinct. The Big Bang marks the beginning of our universe, while a black hole is a region of spacetime where matter has collapsed under gravity to an extremely dense and compact state.