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#1/ First off, you must choose the destination for your mission

#2/ Now you have to select the number of boosters. The role of boosters Is to propel the rocket into space. The number of boosters depends on the cargo and the mission. You’ll need more boosters for a heavy payload or a distant destination. How many do you need?

#3/The engines also provide the rocket’s thrust. Depending on their size, they can be combined to generate an equivalent thrust. How many engines do you need at the bottom of the rocket’s main stage?