The scientist running the Square Kilometre Array, the world's biggest telescope. Episode five of five.

The telescope's antennae spiral across the African continent. In the remote North Karoo town of Carnarvon in South Africa, the next generation of astronomers is training to run this major telescope facility.

(Photo: South Africa’s Karoo-based KAT-7 radio telescope array are pictured at sunset at The Square Kilometre Array. Credit: Alexander Joe/AFP)