Weekend Variety Wirless - Hour 1 - 18/08/18

Marine biologist Rochelle Constantine joins RadioLIVEs Graeme Hill to take a look at our marine reserves and their ecological management. Dr Constantine describes the effects of our Marine reserves on our wider marine environment. She also takes a look at new ways to protect special ocean ecologies. Astronomer Grant Christie joins Graeme Hill to talk the latest in astronomy news.First up they take a look at the amazing story of Eta Carinae - a superstar. Dr Christie dicusses how Faint echoes of light illuminate what really happened during the Great Eruption of Eta Carinae in the 1840s.. Then Dr Christie explores a recent optical navigation from Hayabusa2s first gravity measurement of the asteroid Ryugu.54 images have been captured from Hayabusa2s first decent toward Ryugu, which brought it as low as 851 meters away from the asteroids surface. Then the pair explore the martian moon Phobos. The moon passed in front of the sun resulting in a solar eclipse. Said eclipse was captured from the surface of mars. Weekend Variety Wireless with Graeme Hill, 8pm - midnight Saturdays and Sundays, on RadioLIVE and streaming live to the Rova app on Android and iPhone.