In the fourth exocast episode:
- Hannah take us on a whirlwind tour of the planets in our own familiar solar system.
- Andrew covers how we can use the Mass and Radius of exoplanet to tell us about their interiors.
- Hugh looks at the news including observations of Trappist-1 b & c, and 136 new planets.
- And Andrew adopts the Earth-like planet Kepler-186 f to our growing family.