每日一图 (每日约13.30更新)
Yes, but can your comet tail do this? No, and what you are seeing is not the tail of a comet. The picture features a cleverly overlayed time-lapse sequence of a group of satellites orbiting Earth together in June. Specifically, these are Starlink communications satellites in low Earth orbit reflecting back sunlight before sunrise to Inner Mongolia, China. Although the satellites appear to the human eye as points, the 20-second-long camera exposures caused them to appear as short streaks. Currently there are over 9000 Starlinks in orbit, with more being launched nearly every week. Other satellite constellations are also being planned. Explore the Universe: Random APOD Generator
最新异域文明研究活动 发起新活动
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看了几个视频，非常担忧孤独终老
发表于：2022-10-05 17:22:25
睡梦中与女孩亲吻
发表于：2023-04-23 03:51:36
双腿残疾的我，下半生的心愿
发表于：2023-03-22 15:47:16
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
死亡，伤残，与人生
发表于：2022-04-01 14:20:40
我的失败的前半生（3）
发表于：2022-03-20 15:21:22
世界和人类（3）
发表于：2022-07-17 17:07:38
女孩，我的爱人
发表于：2022-04-27 03:16:58
又逼近31日一天，还是空无
发表于：2022-12-28 01:32:10
还有三次机会，呕心沥血，必须获得大奖，阿们。
发表于：2023-05-15 21:54:55
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 :992300 .
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