每日一图 (每日约13.30更新)
Transfusing sunlight as the sky grew darker, this exceptional display of noctilucent clouds was captured on July 10, reflected in the calm waters of Vallentuna Lake near Stockholm, Sweden. From the edge of space, about 80 kilometers above Earth's surface, the icy clouds themselves still reflect sunlight, even though the Sun is below the horizon as seen from the ground. Usually spotted at high latitudes in summer months, the night shining clouds have made a strong showing so far during the short northern summer nights. Also known as polar mesopheric clouds they are understood to form as water vapor driven into the cold upper atmosphere condenses on the fine dust particles supplied by disintegrating meteors or volcanic ash.
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
梦见同学聚会玩游戏
发表于：2023-01-23 06:09:42
我可能需要更换电脑桌面照片
发表于：2022-09-15 03:20:51
拼尽全力减重到位
发表于：2023-01-25 01:54:34
早饭父亲给盛饭菜
发表于：2023-01-20 07:03:09
用户小调查功能上线测试
发表于：2022-09-17 05:01:57
明天除夕，今天该做些什么呢？
发表于：2023-01-20 07:09:27
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
User vOChbKGxDrUbkvj has points :1000 .
ACQs :
0
CCAs:
0
ACCS:
0