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What The F*** Facts on Twitter: "A laser shoots across London from Greenwich, signifying the meridian line at 0 degrees longitude. http://t.co/9YyCQPF507" / Twitter
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Londoners convinced 'aliens are landing' as 'crazy beam' from green laser lights up East London sky - MyLondon
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Looking At The Green Laser Shining From Greenwich Observatory Across The River Thames London Stock Photo - Download Image Now - iStock
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Greenwich Meridian Laser Shining Over London At Night Photograph by Miguel Claro/science Photo Library - Pixels
![Meridian line laser and Flamsteed House, Royal Observatory from the grounds of Royal Museums Greenwich, 2005 (photo) by Meridian line laser and Flamsteed House, Royal Observatory from the grounds of Royal Museums Greenwich, 2005 (photo) by](https://images-cdn.bridgemanimages.com/api/1.0/image/600wm.XXX.18324370.7055475/7339202.jpg)
Meridian line laser and Flamsteed House, Royal Observatory from the grounds of Royal Museums Greenwich, 2005 (photo) by
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