![Every night, a green laser at the Royal Observatory marks the Greenwich Meridian onto the night sky : r/london Every night, a green laser at the Royal Observatory marks the Greenwich Meridian onto the night sky : r/london](https://preview.redd.it/every-night-a-green-laser-at-the-royal-observatory-marks-v0-2fugqi6jmafa1.jpg?auto=webp&s=3c3d998d5f582ed0c791241bb5b30f498882d131)
Every night, a green laser at the Royal Observatory marks the Greenwich Meridian onto the night sky : r/london
![Looking At The Green Laser Shining From Greenwich Observatory Across The River Thames London Stock Photo - Download Image Now - iStock Looking At The Green Laser Shining From Greenwich Observatory Across The River Thames London Stock Photo - Download Image Now - iStock](https://media.istockphoto.com/id/1206648335/photo/looking-at-the-green-laser-shining-from-greenwich-observatory-across-the-river-thames-london.jpg?s=170667a&w=0&k=20&c=pfuIx4p8PsnRlFm4LHSjUL_hEEmW6w1b_BQM2vuSrNM=)
Looking At The Green Laser Shining From Greenwich Observatory Across The River Thames London Stock Photo - Download Image Now - iStock
![A green laser beam marking the Greenwich Meridian Line shines at night in front of the Canary Wharf skyscraprs in London Stock Photo - Alamy A green laser beam marking the Greenwich Meridian Line shines at night in front of the Canary Wharf skyscraprs in London Stock Photo - Alamy](https://c8.alamy.com/comp/AR0KYN/a-green-laser-beam-marking-the-greenwich-meridian-line-shines-at-night-AR0KYN.jpg)
A green laser beam marking the Greenwich Meridian Line shines at night in front of the Canary Wharf skyscraprs in London Stock Photo - Alamy
![Greenwich Meridian Line: After 131 years it turns out the Line is in the WRONG place - Mirror Online Greenwich Meridian Line: After 131 years it turns out the Line is in the WRONG place - Mirror Online](https://i2-prod.mirror.co.uk/incoming/article6248051.ece/ALTERNATES/s1200b/PAY-Greenwich-Meridian-Line.jpg)
Greenwich Meridian Line: After 131 years it turns out the Line is in the WRONG place - Mirror Online
![Greenwich's incredibly cool 'Meridian laser beam', what it's for and why residents on the other side of London complained - MyLondon Greenwich's incredibly cool 'Meridian laser beam', what it's for and why residents on the other side of London complained - MyLondon](https://i2-prod.mylondon.news/incoming/article25995558.ece/ALTERNATES/s615/0_GettyImages-184987993-1.jpg)
Greenwich's incredibly cool 'Meridian laser beam', what it's for and why residents on the other side of London complained - MyLondon
![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
![Greenwich Meridian Laser Shining Over London At Night Photograph by Miguel Claro/science Photo Library - Pixels Greenwich Meridian Laser Shining Over London At Night Photograph by Miguel Claro/science Photo Library - Pixels](https://render.fineartamerica.com/images/rendered/small/print/images/artworkimages/square/2/greenwich-meridian-laser-shining-over-london-at-night-miguel-claroscience-photo-library.jpg)