Why this observatory fires lasers at satellites

2021-09-06

[public] 839K views, 82.9K likes, 259 dislikes audio only

NERC's Space Geodesy Facility, hidden away in the English countryside, fires lasers at satellites. Because it turns out that knowing a satellite's position exactly is really, really difficult. More about the Facility: http://sgf.rgo.ac.uk/

Thanks to Jay Dickieson for the suggestion!

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