Discuss [Clip] Hướng dẫn quan sát bầu trời tháng 10/2011 http://www.thienvanhoc.org/vi/quan-sat-thien-van/tieu-diem-quan-sat/1592-clip-huong-dan-quan-sat-bau-troi-thang-102011-.html Wed, 22 May 2013 08:17:06 +0700 JComments http://www.thienvanhoc.org/vi/quan-sat-thien-van/tieu-diem-quan-sat/1592-clip-huong-dan-quan-sat-bau-troi-thang-102011-.html#comment-20 Edwin Sat, 29 Oct 2011 11:22:33 +0700 http://www.thienvanhoc.org/vi/quan-sat-thien-van/tieu-diem-quan-sat/1592-clip-huong-dan-quan-sat-bau-troi-thang-102011-.html#comment-20