Izzie and Dr Becky are venturing into interstellar space. What is it? Where is it? And what do we know about it? 

With special thanks to Professor Martin Barstow from University of Leicester and Professor Chris Lintott from the University of Oxford. Chris' new book "Our Accidental Universe" is out now. 

Check out the RAS's video on Pons Brooks here: https://ras.ac.uk/news-and-press/news/12ppons-brooks-how-and-when-see-devil-comet

The Supermassive Podcast is a Boffin Media production for the Royal Astronomical Society. The producers are Izzie Clarke and Richard Hollingham.