Black Holes: The Edge Of All We Know

Two teams on a quest to understand the universe: A group of physicists, including Stephen Hawking, try to prove black holes do not annihilate the past and unleash a paradox. The Event Horizon Telescope creates a world-spanning system for the first picture of a black hole 55-million away. Explore the boundaries of science: What is real? What can be known? What is a black hole?