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Keck Observatory: The Most Scientifically Productive Telescopes
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Keck Observatory: The Most Scientifically Productive Telescopes
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Keck telescopes | telescopes, Mauna Kea, Hawaii, United States | Britannica
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Keck Observatory: The Most Scientifically Productive Telescopes
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Keck telescopes | telescopes, Mauna Kea, Hawaii, United States | Britannica
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