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Clip description
This clip explains how radio signals are sent to the moon and reflected back. It begins with exterior footage of the Radio Australia headquarters in Shepparton, Victoria where radio signals are sent to a receiving station at Hornsby, New South Wales. When the moon is in the aerial beam, the signals can be picked up a second time as an echo after travelling to the moon and back. A monitor displays the direct signals from the transmitter and their echoes from the moon.
Curator’s notes
A moon echo occurs when radio signals are reflected from the moon’s surface, allowing scientists to study what happens when radio waves pass out and back through the Earth’s atmosphere.
