Part 3/14:
Anton highlights a thought-provoking calculation: the total mass contained within our observable universe, approximately one septillion kilograms, when plugged into the black hole formula, predicts a hypothetical black hole with a size of around 300 billion lightyears across—staggeringly larger than the universe itself. This coincidence suggests that the universe’s own size and mass are eerily consistent with what one might expect if it were a giant black hole, raising tantalizing questions about the universe’s true nature.