What makes the Moon's South Pole so fascinating?

A week ago, India set down a robotic probe on the Moon, becoming the first country to land near the lunar south pole. Chandrayaan-3's Vikram lander - carrying a rover in its belly - touched down on the lunar soil after a 20-minute, nail-biting finale watched by millions of people across the world. Future missions to this region are planned by the US, China and Russia. So what makes it so fascinating? Astrophysicist and cosmologist Dr Brad Tucker talks to Mark Leishman about all things lunar.