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Once in a while I go on flightradar24 .... because for some reason I like to watch all the helicopters servicing the oil platforms in the North Sea .... sometimes there are over 20 Sikorsky S92's & Eurocopters in the air at one time.
Plus some days there are lots of gliders cruising over Spain and France .... plus an occasional hot air balloon
Anyway one day I noticed a bunch of balloons over California and Texas and each one had an N-Number assigned ... but when I tried to look up the registration no info was available
Then I noticed they were flying at 59,000 feet ..... and at night !!! .....
HUH !!!Further digging I find out they are part of
Project Loon and they are high altitude internet broadcasters designed to provide service to every region on earth.
Probably everyone knew about this except me .... haaaa
https://www.flightradar24.com/33.3,-97.67/8https://en.wikipedia.org/wiki/Loon_LLChttps://loon.com/.