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jan 1, 1948 - New Largest telescope!

Description:

US astronomers built a telescope with a 5-meter(200-inch) diameter mirror on Palomar Mountain in Southern California. It remained the largest visible-light telescope in the world for several decades.

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Technology timeline of astronomy

ByHunter
13 Feb 2020
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Date:

jan 1, 1948
Now
~ 77 years ago
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