isn't really a show that deals with space much, since it's about doing experiments to test myths and urban legends and see if they're plausible or not. Since they can't actually go into space, they don't do a lot of space myths. The only really space-centric episode they did was "NASA Moon Landing
," which debunked a number of the crazy conspiracy theories about the Moon landing being faked.
Although they've done at least one myth about an ancient attempt at spaceflight, the classic "Ming Dynasty Astronaut