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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25日消息，由于RTX 5090显卡的市场供应极其混乱，DIY玩家正面临前所未有的尴尬处境。    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.。根据最新市场报价显示，单张旗舰显卡的价格已失控至超过全套整机，导致买显卡白送电脑成了当下的真实写照。     目前美国市场上能现货供应的最便宜显卡是华硕ROG夜神RTX 5090 OC，其售价录得4829.99美元（约34534元人民币）。          而有趣的是，作为整机大厂的惠普，其旗舰级暗影精灵MAX 45L主机在同样配置了RTX 5090显卡后，整机售价仅为4709.99美元（约33676元人民币）。          两者之间存在120美元（约858元人民币）的价差，且整机还额外附带了处理器、内存、硬盘等全套硬件。     这种价格倒挂现象的背后，是显卡单品溢价的彻底失控。华硕这款显卡在发布之初定价为2799.99美元（约20020元人民币），相比公版已存在较高溢价。

二 |     但目前的实际售价相比首发价又足足上涨了2030美元（约14514元人民币），达到了4829美元（约合元34534人民币），这张显卡现在的价格已经可以买到两张半公版RTX 5090。

三 |          与溢价严重的单显卡相比，惠普这款旗舰整机其核心性能由锐龙7 9700X与32GB DDR5-6000高频内存支撑，存储则选用1TB PCIe Gen4 SSD。    外观设计上，该机采用了45L超大机箱以确保散热效能，并配备了足以驱动RTX 5090的特制大功率电源，接口配置齐全，涵盖了目前主流的所有高速传输协议。    目前惠普整机仍处于可订购状态，并预计于本月底发货，而零售市场上的显卡货源依然极其稀缺，且价格仍处于上行区间。

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Published on:19:47:50