每日一图 (每日约13.30更新)
On August 15, this perseid meteor streaked through night skies over the Observatorio del Roque de los Muchachos at La Palma, Canary Islands, Spain. The bright and colorful meteor trail was captured next to the central Milky Way, whose dark interstellar dust clouds and luminous starlight reach above the horizon. In the foreground of this tantalizing celestial scene is the 23 meter diameter mirror of the prototype Large-Sized Telescope (LST-1). LST-1 is the first telescope constructed at the northern hemisphere site of the innovative Cherenkov Telescope Array Observatory. With 198 hexagonal mirror segments and a large, high-efficiency, pixelized camera, LST-1 is designed to detect extremely brief, atmospheric visible light flashes. Lasting about a billionth of a second, the visible light flashes are triggered by energetic gamma-rays from cosmic sources such as distant active galaxies and gamma-ray bursts. Of course, on that night some individual mirror segments of LST-1 also reflected the atmospheric flash of the bright perseid meteor. APOD's email for image submissions has changed. Please see: APOD Submissions. APOD's main NASA site is moving: From apod.nasa.gov to science.nasa.gov/apod
最新异域文明研究活动 发起新活动
推荐阅读： (only temp appear)
投稿发表在首页
双腿残疾的我，下半生的心愿
发表于：2023-03-22 15:47:16
看了几个视频，非常担忧孤独终老
发表于：2022-10-05 17:22:25
再次回忆北京五道口吃饭时遇到的女孩
发表于：2022-09-08 15:52:55
睡梦中与女孩亲吻
发表于：2023-04-23 03:51:36
生存危机又加重一层
发表于：2022-01-07 03:14:38
梦见研究 get的过去式过去分词
发表于：2022-03-29 02:45:51
梦见被融化冰体女孩
发表于：2023-04-14 01:12:16
七夕节没有女孩在身边
发表于：2022-08-04 20:21:13
这几年没有赚钱，二姐和二姐夫来串门，只好如实说了
发表于：2022-02-17 19:04:19
初步看了爱因斯坦场方程
发表于：2022-08-25 04:25:10
科技渴求榜 渴求
今天，又是渴求大奖
(IMP: 2700 )
一直为表弟的肾衰竭担心，异域文明请传授治疗技术
(IMP: 700 )
我的人生生存和发展基础难道是可鄙的？
(IMP: 200 )
用户，头衔，积分
User 吴鹏 has points :992400 .
ACQs :
34
CCAs:
16
ACCS:
7
User peng wu has points :48400 .
ACQs :
2
CCAs:
0
ACCS:
0
User wup has points :3800 .
ACQs :
0
CCAs:
0
ACCS:
0
User 我来自于星空 has points :1200 .
ACQs :
0
CCAs:
0
ACCS:
0
User Steven Jackson has points :1000 .
ACQs :
0
CCAs:
0
ACCS:
0