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Herschel Space Observatory
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William Herschel Telescope
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Herschel Space Observatory
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Herschel Space Observatory - Wikipedia
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Herschel | Infrared Astronomy, Observations & Discoveries | Britannica
ESA Science & Technology - Science data, discoveries and people: the legacy of ESA's Herschel Space Observatory
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William Herschel Telescope
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Jet Propulsion Laboratory Herschel Mission Home Page
