Chatting with a science star and catching dust from stars with solid smoke

That stuff pictured above is aerogel, aka "solid smoke", which was used on NASA's Stardust probe to capture dust from comet Wild 2 and return it to Earth—along with a handful of precious samples of interstellar dust, giving a rare glimpse of material from outside our Solar System.In this show, Stu also talks to British scientist Maggie Aderin-Pocock, host of the long-running astronomy TV show The Sky at Night, and who's also known for answering important questions like, do we really need the Moon?