039 = Many Ways to Replace Lights and Trebuchets Shooting Space Flights (live at Bluedot Festival)

In this very special episode, live from Blue Dot Festival...   * How many astronauts does it take to change a light bulb?   * What is the most environmentally friendly way to launch an object into space?   * And APS are live for the first time at Blue Dot Festival!    A huge thank you all the contributors that helped make this episode happen;   To Professor Steven Lockley from Harvard. You can find more about his contributions to sleep in space here: https://www.sciencedirect.com/science/article/abs/pii/S0094576512001336   If you want to find out about Circadian Rhythms on Earth, have a listen to Epis...