Transiting Exoplanet Survey Satellite (TESS) I accidentally flew this one several days early, on the day it was originally planned. Oh well. The payload here was neat to build, because I think I got it pretty close to the real thing, but the mission planning was just as cool. I had to use Falcon 9 to place it into a high elliptical orbit, then use its onboard thruster to raise its periapsis just high enough to get the right phase for the Mun gravity assist. Then, one orbit later, I had
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