We are 
We know our rockets from head to toe 
, but can you tell the difference between the"Cryogenic Upper Stage, the Solid Rocket Booster and the Cryogenic Main Stage ? #ArianeFacts #TuesdayTopicpic.twitter.com/wk5Ts7R45N
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Main stage is like the body/legs, connecting everything together. Booster is like two arms giving a hand out to help the legs do it's job. Upper stage is.... Head???
