TheJ485

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Ion Engine Concept

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Nuclear Thermal Rocket MK2

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Deuterium Cryo Generator

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Fusion Gun/Thruster

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Orbiting Rings

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Arc Thruster

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Coal-powered zero g jet engine

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Gas-powered zero g jet

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Non-buggy solar panel MK2

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Stick man-powered boiler

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Infinite Salt, No Clone

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BOYLE+OXYGEN Engine

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