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Though I remember that thrilling moment of the first landing on the moon, and though exploration of the heavens advances technologies that can be applied here, we have more pressing issues on this planet...from overtaxed food, energy and water supplies to growing population numbers, some of the money spent on space travel could, at least in part, help critical global issues threatening to reach catastrophic levels in the future. We don't need to colonize other planets...take care of home first.