<p>How do we calculate a black hole's event horizon? Does Mercury's tail impact Earth? Can we name a planet Rupert? And did gravity wipe out the dinosaurs? Izzie Clarke &amp; Dr Becky Smethurst dive into the rather whimsical Supermassive Mailbox to answer your questions.</p><br><p>Want to name an Exoworld? Here's the IAU website to start a campaign: https://nameexoworlds.iau.org/</p><br><p>Send your questions, whimsical messages and your night sky photos to [email protected] or find us on Instagram <a href="instagram.com/supermassivepod" rel="noopener noreferrer" target="_blank">@SupermassivePod</a>. Or why not support the show by joining <a href="http://supermassive.supportingcast.fm/" rel="noopener noreferrer" target="_blank">The Supermassive Club</a>? You'll get ad-free listening and access to The Supermassive forum.</p><br><p>The Supermassive Podcast is a Boffin Media production. The producers are Izzie Clarke and Richard Hollingham.</p><hr><p style='color:grey; font-size:0.75em;'> Hosted on Acast. See <a style='color:grey;' target='_blank' rel='noopener noreferrer' href='https://acast.com/privacy'>acast.com/privacy</a> for more information.</p>