Celestial Wanderers/teaching approach

Session 3 is essentially aimed as an introduction to planetary geology⁽ⁱ⁾, something not normally studied until degree level. It uses the narrative⁽ⁱ⁾ of the Voyager Probes journey to illustrate the vastness of the solar system⁽ⁱ⁾ and also the challenges of designing a spacecraft to travel that far. It ends with a discussion of the history⁽ⁱ⁾ of Mars, and how the differences between it and the Earth resulted in it loosing its water and atmosphere whereas we have kept ours.