科普阅读:Astronomy Picture of the Day(08-13-2011)
Castle and Meteor by Moonlight Each August, as planet Earth swings through dust trailing along the orbit of periodic comet Swift-Tuttle, skygazers enjoy the Perseid Meteor Shower. As Earth moves th
2011-08-13 编辑：Richard 标签：
科普阅读:Astronomy Picture of the Day(08-12-2011)
图片说明：NGC 7331 and Beyond Big, beautiful spiral galaxy NGC 7331 is often touted as an analog to our own Milky Way. About 50 million light-years distant in the northern constellation Pegasus, NG
2011-08-12 编辑：Richard 标签：
科普阅读:Astronomy Picture of the Day(08-11-2011)
图片说明:The Snows of Paranal Recorded last week, this dawn portrait of snowy mountain and starry sky captures a very rare scenario. The view does feature a pristine sky above the 2,600 meter high
2011-08-11 编辑：Richard 标签：