As we draw Season 4 of Kobo in Conversation to a close, we bring you a conversation with theoretical cosmologist Katie Mack on a wholly different kind of ending. Listeners may recall host Michael Tamblyn's praise for The End of Everything (Astrophysically Speaking) in our year-end Staff Picks episode, where he found that during 2020, it helped to have a sense of time and space and the forces acting on every particle throughout the universe. Michael spoke with Katie about the 5 theoretical ways the universe will end, and we learned why for her the study of astrophysics is preferably a "social" science.

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