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

一 |     8月26日10时30分许，因尼泊尔一侧发生泥石流灾害，造成西藏日喀则市吉隆县吉隆口岸重大人员伤亡、失联。    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.。         　　灾害发生后，应急管理部立即调度部署救援处置工作，派出工作组赴现场协助处置，调派国家综合性消防救援队伍249人以及中国安能、中国电建等各类工程救援力量325人携带装备赴现场救援；调派“星立通”通信保障、“磁探精灵”航磁探测等装备赴灾区，为现场通信保障、抢险救援等提供技术支撑。国家防灾减灾救灾委员会、应急管理部启动国家二级救灾应急响应，会同国家粮食和物资储备局调拨帐篷、取暖炉、衣被、折叠床、防潮垫等3万件中央救灾物资，支持做好群众转移安置和救灾救助工作。

二 |                【编辑:张子怡】。

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