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Crewed Mission to Mars May Be Exposed to Unsafe Levels of Radiation, Study Warns_我的网站

一 |     While scientists and science fiction authors alike have long dreamed of sending crewed missions to Mars, a new study suggests these plans may hit a snag – a big one.,The authors of a yet to be peer-reviewed study argue that the participants of such a mission to Mars would end up being exposed to radiation – namely, to “energetic charged particles from Galactic and Solar origin” – both while in transit and while on the planet itself, with the “thin spacecraft shield” and “rarefied Martian atmosphere” offering little in the way of protection.,The research team attempted to gauge the impact of a simulated 1,000-day mission to Mars on various organs of the human body, and concluded that astronauts may be exposed to radiation doses above one Sievert, which is over the safe limit set by most space agencies, New Scientist points out.,“We suggest mitigation strategies such as improved ways of shielding and dietary supplements, and make recommendations for the safety of astronauts in future crewed missions to Mars,” the team wrote in the abstract of their work available on the arXiv preprint server.,Ideas about how astronauts may be protected from radiation during a mission to Mars have already been proposed, such as the concept of a radiation shield comprised of a fungus found growing at the Chernobyl Nuclear Power Plant.,Last year, one architecture studio even unveiled a project for a self-sufficient and sustainable city that would be built on the red planet itself.。    一列复兴号智能动车组列车从玉环站驶出 上铁集团供图商报讯 昨天上午8时49分，随着G7364次复兴号智能动车组从玉环站平稳驶出，杭台高铁温玉段正式开通运营，这一刻，彻底终结了玉环不通铁路的历史，这座滨海小城从此跨入便捷高效的高铁时代。与此同时，台州市也由此实现“县县通铁路”。杭台高铁是长三角地区城际铁路网的重要组成部分，温玉段是杭台高铁的延伸线路，位于台州市南部，途经温岭、玉环两地，新建正线长约37公里，设计时速350公里。全线设温岭、温岭西、玉环3座车站，其中温岭站为改建既有车站，温岭西站、玉环站为新建车站。通车初期，线路每日开行图定动车组列车16列，密集的班次、极快的通行速度，切实惠及沿线百姓日常出行。今后，玉环市民13分钟就能直达温岭，26分钟抵达台州主城区，1小时26分钟可到绍兴北站，1小时47分钟直达杭州东站，3小时03分钟就能抵达上海南站。后续，铁路部门将根据市场需求和客流变化，灵活动态调整列车开行方案，精准匹配百姓出行需求，让出行更灵活、更便捷。杭台高铁北接沪昆、合杭、宁杭、杭昌高铁，南连杭深铁路，途经嵊州、新昌、临海、温岭等地，串联天台山、天姥山等风景名胜，与“浙东唐诗之路”高度契合，被誉为“诗路高铁”，是一条黄金旅游线。自2022年1月开通以来，杭台高铁累计客流已突破1亿人次，连续四年保持快速增长态势，有力促进了沿线人流、物流、资金流、信息流高效流动。温玉段的开通运营，将进一步释放杭州至玉环全线贯通的路网优势，“浙东唐诗之路”与玉环的大鹿岛、漩门湾国家湿地公园等滨海旅游资源相连，市民游客无需长途辗转，就能一站式解锁“山水+碧海”的双重美景，周末短途游、亲子游、休闲游有了全新选择，也为本地民宿、餐饮、文旅产业带来全新发展机遇，带动群众增收致富。作为长三角铁路联网、补网、强链的项目之一，杭台高铁温玉段将浙江省高铁交通圈进一步扩展到台州东南沿海，对于加快打造浙江省1小时高铁交通圈，完善区域路网结构布局，促进沿线文旅产业融合发展，助力浙江高质量发展建设共同富裕示范区等具有重要意义。

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