What happens when you point a wartime radar at the Moon? In 1946, the US Army decided to find out. Just 2.5 seconds after sending a radio pulse towards the lunar surface, engineers detected something astonishing: the signal had come back.
At Camp Evans in Fort Monmouth, New Jersey, a team of military and civilian personnel waited as the modified radar equipment sent a series of radio pulses towards the rising Moon. The target was nearly 384,000 kilometres away, far beyond anything conventional wartime radar had been designed to reach.
