56:36Brian Cox - The Most Mysterious Facts About The Universe
Brian Cox walks through the questions that keep working physicists up at night. He opens on the Fermi paradox, a galaxy of 400 billion suns that has stayed silent for over 10 billion years, and runs every serious resolution: rare Earth, undetectable machines, the von Neumann probe argument, the dark forest, Frank Drake's rare orchid analogy, and the great filter ahead of us or behind us. His own guess is that complex life is so rare we may be alone, because the eukaryotic cell evolved only once after three billion years of single cells. He then explains why space is flat, why quantum mechanics is the probabilistic base layer of reality, the true scale of the universe seen through Andromeda, the live hunt for life on Mars, real quantum teleportation, and wormholes hiding in century old math. The back half is a full history of the black hole, from Michell and Laplace's dark stars to the event horizon where time stops, the singularity that is a moment rather than a place, Hawking radiation, and the unsolved information paradox.