拉西拉ESO天文台上的天文望远镜设备,智利 (© Alberto Ghizzi Panizza/Getty Images)(Bing United States)

拉西拉ESO天文台上的天文望远镜设备,智利 (© Alberto Ghizzi Panizza/Getty Images)(Bing United States)

Shopping on Amazon.com to support us with hosting and bandwidth costs