| 41. | Many of Britain's Stone Age monuments, including Stonehenge, also served as primitive astronomical observatories.
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| 42. | The tourist astronomical observatory is open to the general public.
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| 43. | He also was director of an astronomical observatory at Lyon.
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| 44. | The town hosts Andrushivka Astronomical Observatory ( A50 ).
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| 45. | "I'm pleased to announce that the only astronomical observatory on Mars is open for business,"
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| 46. | Located near the village is a public astronomical observatory.
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| 47. | It was an astronomical observatory during the Koryo period.
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| 48. | The school owns and operates the Brooks Astronomical Observatory.
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| 49. | The Perth Observatory is an astronomical observatory in Bickley.
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| 50. | Images from the McDonald Observatory, South African Astronomical Observatory and other sources are also available.
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