Wales' largest optical telescope has been on Swansea's coastline since the 1990s. But when the municipality increased the rent, the Swansea Astronomical Society cut and ran.
In the spring of 1956, Dutch Queen Juliana set the world's largest radio telescope in motion in the Dutch village of Dwingeloo with a simple push of a button.
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On November 9, 1989, the Berlin Wall, a symbol of Cold War division and oppression, was breached. Berliners poured through the newly opened checkpoints.
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