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美国总统奥巴马4月15日在NASA肯尼迪航天中心发表演讲。他对其砍掉NASA重返月球计划的决定进行了辩护,称他为NASA新确定的路线有望能比旧规划更快地把美国宇航员送到低地轨道以外更远的地方,并发誓要在2025年把美国宇航员送往一
U.S. President Barack Obama delivered a speech at NASA's Kennedy Space Center on April 15. He defended his decision to cut NASA's plan to return to the moon and said that the new route he identified for NASA is expected to send U.S. astronauts farther beyond Earth's orbit faster than the old plan and vow to In 2025 the United States astronauts sent to one