First Stage
In space and astronautical engineering, the first stage refers to the initial section of a multistage rocket that provides the majority of the thrust during the launch phase. The first stage is typically the largest and most powerful section of the rocket, and is responsible for lifting the entire vehicle off the launch pad and into the upper atmosphere. Once the first stage has expended its fuel, it is jettisoned and the second stage takes over. The first stage is often designed to be reusable, with some rockets featuring landing capabilities that allow them to return to Earth for refurbishment and reuse. The design and construction of the first stage is critical to the success of the launch, as it must be able to withstand the extreme forces and temperatures of liftoff and ascent.
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