Transcription: Sir Isaac Newton was an English mathematician and physicist who could visualize the motion of objects in space. Newton's first law of motion is, a body continues at rest or in uniform motion in a straight line unless acted upon by some external force. In other words, if you fire the main SPS engine for a brief period of time, the command module will continue flying through space forever unless it falls into a planet or the sun's gravity field or you fire the engine again in another direction. Keep in mind that you don't have a tremendous amount of fuel. Don't waste it. The Reaction Control Sys ...
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