On this episode of 'Cheddar Reveals': Researchers estimate that the Milky Way is about 1.9 million light-years across; James Bullock, Professor of Physics and Astronomy at UC Irvine, discusses what scientists are doing to prepare for the next generation of space exploration; Leroy Chiao, Former NASA Astronaut and International Space Station Commander, discusses the accuracy of Hollywood's portrayal of deep space; Cheddar gets a look at CuriosityStream's 'Living Universe' that examines the future of space exploration.