Albert Einstein's theory of general relativity changed how we understand gravity, space, and time. First celebrated, then overlooked, and now revisited, the story of this century-old theory shaped 20th-century science. From the start, a mathematical problem threatened to end the theory: the Schwarzschild singularity. Join international physicists as they explore this theory, which has a unique path ahead. We uncover a "curved" universe even more bizarre than Einstein imagined, containing objects like black holes that continue to puzzle scientists today.