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Saturday, October 3rd marked the 75th anniversary of radio astronomy in Australia.
The detection just after dawn of intense radio emission coming from the Sun,
using equipment which had been installed at the
Collaroy Plateau air and sea defence radar station during WWII,
was the birth of radio astronomy in Australia.
The Northern Beaches Council has erected a weather shelter to commemorate
this event, and the image above shows the Sun just after dawn on
Saturday October 3rd with the new shelter in the forground.
(Image credit: Hastings Pawsey)
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