单词：perigee propulsion
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Visionary Ideas Could Transform Future NASA Missions NASA, the U.S. space agency, has awarded $3 million in grants for 30 proposals which explore new ideas for Americas next generation space program. The proposals reflect wide-ranging visions of new
VOA标准英语2011年(八月)
One of the best celestial events of the year is set to peak this weekend. It will be the largest super moon of the year. The super moon is actually the result of two phenomena occurring at the same time. The moons orbit around the earth is not perfec
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It was last night, right here in World News, we told you about the super moon, well, tonight if you're lucky enough to have a clear sky, you have a quite show. But we want to know the science behind, Why it seem bigger, and brighter we've seen years.
万花筒2012年
Scientists Testing Space Propulsion by Light 科学家测试太阳能动力 Can the sun provide power for a spaceship to travel to the edge of our solar system? The answer may come from a small satellite. A Delta V rocket carried the satellite into s
2015年VOA慢速英语(六)月
NASA Working Toward Mission to Mars The head of the National Aeronautics and Space Administration, or NASA, said that the space agency is on track to land people on Mars in the 2030s. Charles Bolden is the administrator for NASA. He said that five ye
2015年VOA慢速英语(五)月
LOS ANGELES, March 18 (Xinhua) -- The moon will move closer to Earth than it has been in more than 18 years Saturday night, space. com reported on Friday. On Saturday afternoon at 3 p.m. Eastern Daylight Time (1900 MGT) , the supermoon, as dubbed by
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A dramatic supermoon is set to accompany this years Perseid meteor shower, one of the most anticipated events on the skywatchers calendar. 2014年度最大圆月，将和天文爱好者十分期待的英仙座流星雨同时出现。 图片1 Given a
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