Should astronauts live underground on the Moon or Mars? Black hole jets, rogue planets, the big crunch (or freeze) and the Ontario question. Dr Becky, Izzie and Dr Robert Massey tackle your correspondence from the Supermassive mailbox and producer Richard makes a pronunciation intervention.

The book Becky mentions is Red Rising by Pierce Brown.

Keep sending in your wonderful ponderings. Email them to [email protected] or via Instagram @Supermassivepod

The Supermassive Podcast is a Boffin Media production. The producers are Izzie Clarke and Richard Hollingham.

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