45: BONUS - Have you heard of "Ploonets"?

What is the furthest distance away we’ve ever observed? Why hasn't Venus lost its atmosphere from solar winds? Is Mercury a Ploonet? And how stable is the moon's orbit? It's another bonus episode with Izzie Clarke, Dr Becky Smethurst and Dr Robert Massey. See Micheal Brill's brilliant photos from Antarctica here.Read listener Andrew Street's article of Cassini's final moments: Tracing Cassini's fiery death was like seeing a heart monitor flatlineSend in your questions to The Supermassive Mailbox by emailing [email protected], tweet @RoyalAstroSoc or find us on Instagram @SupermassivePod. Want to support the show? Join The Supermassive Club for exclusive content, star-gazing forums and ad-free listening... supermassive.supportingcast.fmAnd keep adding to The Supermassive Mailbox with your pictures and questions for the team. Send them to [email protected] or follow them on Instagram, @SupermassivePod.The Supermassive Podcast is a Boffin Media production for the Royal Astronomical Society. The producers are Izzie Clarke and Richard Hollingham. Hosted on Acast. See acast.com/privacy for more information.