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'Playing Around With Telescopes' To Explore Secrets Of The Universe

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The 200-inch Hale Telescope, a masterpiece of engineering at Caltech's Palomar Observatory, was the world's largest telescope until 1993. (Courtesy of Palomar Observatory/California Institute of Technology)
The 200-inch Hale Telescope, a masterpiece of engineering at Caltech's Palomar Observatory, was the world's largest telescope until 1993. (Courtesy of Palomar Observatory/California Institute of Technology)

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