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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The Main Cryogenic stage would be heart, steady and necessary, works flawlessly. The boosters are more of the legs, not necessary, but a huge plus, and a lot of power packed in. The Upper Cryogenic stage is the brain, sitting on top of everything else, being the most efficient
