In the 25th episode of Exocast:
- Jessica Spake joins us to chat about the first detection of exoplanetary Helium – around the planet Wasp-107b
- Andrew covers whether alien biology could exist in a Shadow Biosphere here on Earth.
- Hannah covers all of May’s exoplanet news;
- And Jess invites an old friend to the exocast adopted planets – 51 Pegasi b, the first exoplanet detected around a sun-like star.