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Rho Ophiuchi dark cloud is one of the closest star-forming regions to our own solar system. Located near the constellations Scorpius and Ophiuchus, the nebula is about 407 light years away from Earth. The infrared astronomical satellite, now celebra
国家地理2008年
C Countdown带着小鲜肉们回归啦！！！你想知道的一切，都能在脱口秀找到哦！
中国传媒大学英语电台
By David Gollust State Department 24 October 2007 Secretary of State Condoleezza Rice is warning Arab politics could become more radical unless the current window of opportunity for Israeli-Palestinian peacemaking is fully exploited. At a congression
2007年VOA常速英语（十月）
By Deborah Tate Capitol Hill 10 September 2007 Six years after the September 11th terrorist attacks on the United States, Bush administration officials say Islamic extremist groups, and al-Qaida in particular, continue to pose a threat to the United
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Transcript for Reference Only --chunshan The infrared astronomical satellite, now celebrating its 25th anniversary, gave us the first all sky view of our dusty infrared universe. Floating above the galactic center is the Rho Ophiuchi Cloud, about 400
自然百科2008年