As a result, NASA will stick with the current version of the SLS with the addition of the "standardized" upper stage. No other details were provided.
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The White House, Congress, and major contractors support the new approach, he said. The bigger question is whether the American public will get on board. Many people are unaware that NASA is just weeks away from launching astronauts into deep space for the first time in over a half-century.，推荐阅读爱思助手下载最新版本获取更多信息
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Neil Sedaka, singer of Breaking Up Is Hard To Do, dies at 86