Send us a text‘Houston, we’ve had a problem here’. John Swigert’s famous words, delivered in a voice as calm and clear as the mountain air in his native Denver home. But to the Apollo 13 mission controllers thousands of miles below in Texas this fired the starting gun in a race against time. At 2am on 14th April, 1970 an explosion in the main oxygen tanks and the failure of a major part of the electrical system suddenly put the Apollo crew’s lives at risk. The extreme conditions in which they...