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相关专家曾指出,现有技术可以让宇航员往返火星约需500天。美国科学家正在研制一种利用核聚变技术驱动的火箭,预计可将往返火星的时间缩短至半年左右。他们预测,数十年内核聚变火箭将能帮助人们进行火星等的深空探索。所谓核聚变,是指两个或两个以上原子核结合反应,从而获得巨大的能量。太阳与恒星发光发热,就是因为它们的内部发生了核聚变反应。人类还根据核聚变反应制造出氢弹。美国空间推进技术公司MSNW给美国航天局介绍核聚变火箭研制进展时说,核聚变火箭并非科幻情节,而是完全可以实现的,有关
Experts have pointed out that the existing technology can make astronauts travel to and from Mars about 500 days. U.S. scientists are developing a rocket driven by nuclear fusion technology and are expected to shorten the journey to and from Mars to six months or so. They predict that decades of nuclear fusion rocket will help people to explore deep space such as Mars. The so-called nuclear fusion, refers to the combination of two or more nuclear reactions, resulting in huge energy. The sun and stars shine and heat because of the nuclear fusion reaction in their interior. Humans also make hydrogen bombs based on nuclear fusion reactions. When NASA introduced the development of nuclear fusion rocket development, the US space launch technology company MSNW said that the nuclear fusion rocket is not a science-fiction plot but can be completely realized.