Sound of Astronomy New Series Episode 2

We hear how a new European space mission will explore exoplanets remotely, and find out what the ExoMars satellite is hoping to discover about life on Mars. There are strange results from the GAIA survey of a billion stars in the Milky Way, so what could be the reason? And we look at the prospects for the total lunar eclipse of 27 July 2018, which is set to be a spectacular event as seen from across the UK.