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Author's Note: 5 Green Technologies for Interplanetary Space Travel

Green technology and interplanetary space travel may seem like a strange combination, but it makes sense. Green technology is all about finding environmentally-friendly and efficient ways to achieve goals. Interplanetary travel by necessity requires efficiency and safety. It's fun to imagine crossing the galaxy in a spaceship kitted out with replicators and holodecks, but it's a safe bet that our early days of space travel will be more about making every effort count.

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