Preparing for #airtraffic control via satellite https://t.co/5NgiTyJuJY pic.twitter.com/ub4fxqcjIN
— ESA (@esa) December 20, 2016
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Preparing for #airtraffic control via satellite https://t.co/5NgiTyJuJY pic.twitter.com/ub4fxqcjIN
— ESA (@esa) December 20, 2016