18. Moons: Io, Titan, the speed of light, astronomers and lunatics

In this episode, we welcome back Banusha Kugabalan to discuss moons. There are 293 moons in our solar system, but here we focus on Io and Titan. We discuss how they form, their compositions, what it would be like to visit and so much more. We chat about how astronomers of the past have used moons to calculate the speed of light, the lunar and solar eclipse, and where the word lunatics comes from. We also introduce a new segment called ‘What in the world?’ where we chat random rock-related things. This episode focussed on the Venusian transit and the tragic tale of the world famous 18th century astronomer Guillaume Le Gentil. Enjoy the episode! #rocks #geology #moons #astronomy #earth #titan #io #saturn #jupiter