astronaut - someone who travels in space, capacity - the most that an object can hold, launch - when something is sent up into the air, limit - to stop after a set time or amount, planet - a large body that orbits around a star, resistance - a slowing force, rotation - how something turns on its axis, technology - the use of science to solve problems, orbit - when a planet or moon moves around a sun in a predictable path, constatn - something that does not change,

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