Plot: The Sky at Night team investigates the ongoing hunt for life on Mars. It is one of the great scientific questions of our time, but are we any closer to finding an answer? As well as uncovering the cause of the recent crash of the Schiaparelli lander, the team looks at the next missions designed to hunt for life on the red planet - from a rover designed to drill deep into the surface, to the orbiter sniffing for signs of methane in the atmosphere