Tom Scott

Why this observatory fires lasers at satellites

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!

I’m at https://tomscott.com
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and on Instagram as tomscottgo

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