In the heady days after the Apollo 11 lunar landing on 20 July 1969, countless children travelled to the Moon by cupping their hands over their mouths and announcing: "Houston, Tranquility Base, here. The Eagle has landed." With giant strides, they bounded across the landscape just like their heroes, Neil Armstrong and Buzz Aldrin. They practised lift-off by counting backwards to zero and blasting themselves skywards. And many of them landed, decades later, in scientific careers.
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