Have you ever wondered what it takes to become an astronaut? Beyond the rigorous physical and mental conditioning, there's one peculiar similarity that links astronaut training facilities with carnivals – centrifuges. Yes, those spinning machines that leave you feeling as though another person is sitting on your chest. But the centrifuges astronauts encounter are an entirely different breed of intense. Today, we're diving into the heart of one of the most notorious centrifuges in history: the Johnsville Centrifuge.