Weekend Variety Wireless - Hour 1 - 08/12/18

First up,Spirit & Opportunity Mars Rovers have been the most over-achieving of all planetary exploration programmes. Designed to rove the Martian surface for 6 months they have been functional for more than a decade. It now seems likely the last survivor, Opportunity, has finally died more than 14 years on. Graeme speaks with the head of the Mars Rover Missions, Bill Nelson of JPL. Then, Astronomy with Grant Christie. Why launch a sculpture into orbit? Ancient cave art depicting constellations, not antelopes? Spiralling super-massive black holes. Osiris-Rex arrived at the tiny primitive asteroid Bennu last Tuesday. Weekend Variety Wireless with Graeme Hill, 8pm - midnight Saturdays and Sundays, on RadioLIVE and streaming live to the Rova app on Android and iPhone.