With the Geminid meteors this weekend, and the successful return of an asteroid sample from the Japanese Hayabusa2 mission, we have expert comment on these hot topics, hosted by Vicky Duncalf.

Paul Money will tell us what to expect from the Geminids and how to observe them -- if you're lucky enough to have clear skies.

Prof Alan Fitzsimmons, world comet expert (he discovered a new one just this week), will explain what we can learn from our studies of smaller bodies in the Solar System, such as the asteroids, comets and meteor showers

Prof Elizabeth Tasker will be live from Japan (where it's be 5.30 am!) to tell us what it was like to be involved with the big story of the past week, and also what it is like to be a British scientist working in Japan.

Our guests are so interesting we're extending the show to 90 minutes - Cosmo the Telescope Sloth will be wanting overtime at this rate.

Make cosmic new friends in the chat room, and stay BIG-BANG-up-to-date with the latest astronomy news.

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