![](http://www.alamy.com/thumbs/6/561338FC-135B-400F-8D33-898DDC599FAD/AYB219.jpg)
The Telescope at Royal Greenwich Observatory on the line of 0 Degreees longitude
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Photo credit: © Travelshots / Alamy / Afripics
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Keywords: 222018, astonomy, britain, british, degrees, dome, england, greenwich, interior, latitude, longitude, meridian, observation, observatory, observing, optical, refractory, royal, telescope, uk, viewing