Astronomer Dr Grant Christie joins Graeme Hill to talk the latest in astronomy news.
He takes a look at strange watery world that could by common thoughout the galaxy.
Graeme and Dr Christie also discuss how the Opportunity Rover is doing after 14 years on Mars - will it wake up?
Dr Christie takes a look at what will happen when the Earth’s magnetic field flips – and how we know that it inevitably is going to. Take a look at the video described here.
He also takes a look at all known asteroids in the solar system. Take a look at an animation of the asteroids here.
Listen to the full interview with Dr Grant Christie above.
Weekend Variety Wireless with Graeme Hill, 8pm - midnight Saturdays and Sundays, on RadioLIVE and streaming live to the Rova app on Android and iPhone.