UK correspondent Adam Gilchrist said Stephen Hawking's work for physics was in itself extraordinary and he was was an extraordinary man. Hawking has died at the age of 76.
Gilchrist said 55 years after he was diagnosed with motor neuron disease, he was told he only had two years to live, he outlived that prophesy by 53 years.
As he said: 'Life would be tragic if it weren't funny.'— Adam Gilchrist, UK correspondent
Listen to Gilchrist describe the life lived by Hawking...
This article first appeared on 702 : 'Life would be tragic if it weren't funny' - Stephen Hawking