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 |  The Volcan Masaya Nature Reserve |
Greenwich Royal Observatory Halley worked here as Royal Astronomer from 1720 to his death in 1742  |
the Greenwich meridan centennial stamps with the transit telescope build by George Airy royal astronomer from 1835 to 1881 |
| Series of four stamps issued in 1990 on the occasion of the centennial of the British Astronomical Association email: A.A. Jagers |
a comet's tail, a solar eclips the lunar tidal bulges 
Herschel's telescope |
the Zodiac Greenwich zero meridian 
Transition telescope |
Archeoastronomy Stonehenge 
Armillary Sphere Ursa Major |