AE ng瓢峄漣 th岷璽
参与互动2012年登陆火星的好奇号火星车是至今最重的火星着陆器，重约0.96吨，几乎已达到该方案所能承受重量的极限，而未来载人火星飞船重量可能超过20吨，必须寻求更为有效的减速方案。
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韩国总统文在寅27日在青瓦台亲自发布26日举行的韩朝首脑会谈结果时表示，金正恩昨天(26日)又一次阐明实现朝鲜半岛无核化的坚定意志。对金正恩来说，无核化决心是不含糊的，他想弄清楚的是，能否相信美国会在无核化实现后结束敌对状态保障体制安全。
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