ScienceCcast:倾听星空

访问 http://science.nasa.gov/ 了解更多信息。 在加州欧文斯谷的中心深处,一台外观奇特的望远镜矗立在沙漠中,倾听着遥远恒星的回声。 点击这里查看更多视频:https://alugha.com/NASA

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