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NASA Tests Power System to Support Manned Missions to Mars United States government agencies say the first tests of a very small nuclear power system designed for missions to Mars have been successful. 美国政府机构表示，为火星任务设计的
VOA标准英语2018年(一月)
Ladies and gentlemen: I present to you our Commercial Crew astronauts. The announcement was made at the Johnson Space Center in Houston Texas by NASA Administrator, Jim Birdenstine. 女士们、先生们：下面向大家介绍我们的商业航天员。
VOA标准英语2018年(八月)
NASA Successfully Tests New Rocket Engine NASA最强火箭测试成功 火星之旅指日可待 The American space agency successfully tested a powerful new rocket engine this week in the desert of northern Utah. The rocket booster is meant to take a
2016年VOA慢速英语(七)月
Disappointing End to NASA Test of Mars Landing Device NASA火星登陆测试设备的结果令人失望 WASHINGTON The U.S. space agency's test run of a Mars landing system came to a disappointing end Monday when the saucer-shaped vehicle's parachute
VOA标准英语2015年(六月)
尝试新概念 NASA火星着陆器遇挫 The U.S. space agency's test run of a Mars landing system came to a disappointing end Monday when the saucer-shaped vehicle's parachute failed to unfurl high over the Pacific Ocean. 美国太空总署（NASA）
VOA双语新闻 2015年6月
WASHINGTON, Nov. 8 (Xinhua) -- NASA plans to add an unmanned flight test of the Orion spacecraft in early 2014 to its contract with Lockheed Martin Space Systems for the multipurpose crew vehicle's design, development, test and evaluation, the U.S. s
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