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

<div>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. <br> <br> See Micheal Brill's brilliant photos from Antarctica <a href="https://www.instagram.com/supermassivepod/?hl=en-gb">here</a>.<br> <br> Read listener Andrew Street's article of Cassini's final moments: </div> <h1><a href="https://www.theguardian.com/science/2017/sep/16/tracing-cassinis-fiery-death-was-like-seeing-a-heart-monitor-flatline"><em>Tracing Cassini's fiery death was like seeing a heart monitor flatline</em></a></h1> <div> <br> Send in your questions to The Supermassive Mailbox by emailing podcast@ras.ac.uk, tweet @RoyalAstroSoc or find us on Instagram @SupermassivePod. <br> <br> <br> </div>