NASAMars
@mhmxnxajncfpc
It's #NationalAviationDay, but that doesn't seem quite adequate for this pioneering rotorcraft – the first powered, controlled flight on any world other than Earth. 🫶 Celebrate by downloading the #MarsHelicopter commemorative poster: https://t.co/1cVj7AnBMW https://t.co/iamAstm3KE
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