关键词：星际之旅：木星计划 astronauts stay 1000 days space station
Fourastronautshavetostay1000daysinaspacestationaroundEarthinordertoprovethatat Fourastronautshavetostay1000daysinaspacestationaroundEarthinordertoprovethatatriptoEuropa,oneofJupiter'smoon,ispossible.Theexperiencegoeswelluntilsomethinghappensonearth
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