From barbie dolls, to birds baths, what will happen to all the stuff we have made between now and the end of time? Could a large black hole spaghettify a small black hole? Could more satellites block JWST's view? And what came first, the Big Bang or Inflation? It's time for another deep dive into The Supermassive Mailbox with Izzie Clarke, Dr Becky Smethurst and Dr Robert Massey.  The Supermassive Podcast is a Boffin Media Production for the Royal Astronomical Society. The producers are Izzie Clarke and Richard Hollingham.