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#NASA's #Surveyor3 became the first operational #Centaur mission to use an indirect parking-orbit trajectory design, a now-standard flight path for many a mission since. #STK
Also on YouTube: youtu.be/PrnXHGV7WxM

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fs👌inator
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@fs10inator
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As much as I love to return to STK after so long, one thing I don't remember is the atmosphere being THIS bright! #Apollo7

