Jim Al-Khalili talks to Professor Martin Sweeting, who when he was a student made a micro-satellite on his kitchen table using electronic components found in some of the earliest personal computers. Somehow he managed to persuade Nasa to let his satellite hitch a ride into space. The technology that Martin pioneered underpins modern life with thousands of reprogrammable microsatellites now in orbit around the Earth and thousands more due to launch in the next few years to bring internet connections to remote parts of the world
