单词：impact dynamics of space debris
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steve always thought much more broadly 史蒂夫所想的远远要比纯粹的 Than just technology. 技术多的多. He was certainly a techno-visionary, 史蒂夫确切的来说是一个技术梦想家 But the key to his greatness is to see how bro
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PlummetingUSSatellitetoHitEarthFriday NASA launched the Upper Atmosphere Research Satellite (UARS) 20 years ago this month. And now that bus-sized satellite is plunging toward Earth. Mark Matney, an orbital debris scientist at NASA's Johnson Space Ce
VOA标准英语2011年(九月)
ARI SHAPIRO, HOST: A giant asteroid slammed into Earth about 65 million years ago. That impact killed off the dinosaurs. And now scientists say it had another major effect on the planet, one that's a cautionary tale. Here's NPR's Nell Greenfieldboyce
2018年NPR美国国家公共电台5月
Every year satellites are damaged or destroyed by objects orbiting the Earth's atmosphere. An Australian company is now using the latest laser technology to track these objects in order to reduce cosmic damage. Li Dong has the details. Even in space,
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So this was serial number one. It was built during the Apollo time. I guess because they thought there would be several of them made, but this is the first one and the last one and is the only one like it in the world. This is NASAs Vertical Gun Rang
探索与发现2014年
Six Astronauts Are Tested to the Limit 对 6 名宇航员的极限考验 Have you ever been on a long-haul flight? How did you pass the time? Perhaps you watched an in-flight movie or read a book. Well it would have to be a very long book to keep you
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