The Apollo 11 mission inspired the world. What has happened in the ensuing half-century?

When Neil Armstrong stepped on to the moon 50 years ago, it was down to a giant leap of political and scientific imagination. His footprints on the powdery lunar surface changed the way we saw ourselves, confirming that humanity could escape its earthly coils. The mission unleashed a dream of what we as a species might do. Yet only a dozen people have walked on the moon, all between the summer of 1969 and the end of 1972.

Did we lose our primordial urge to explore? Almost certainly not – though Buzz Aldrin this week decried “50 years of non-progress”, probes have travelled to Pluto and beyond. But times have changed. The cold war rivalry that catalysed the space race vanished. The Soviet Union was first with a satellite, dog and astronaut in space. Today Washington and Moscow play the great game in the Middle East, not the heavens, although both are now contemplating a return to the moon: Donald Trump wants to make America great again by putting astronauts there by 2024, though some think China may get there first; Russia talks of landing cosmonauts by 2030.