Exocast-25b: Exoplanetary Helium (with guest Jess Spake), plus the “Shadow Biosphere”

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.

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