每日一图 (每日约13.30更新)
Peering from the shadows, the Saturn-facing hemisphere of tantalizing inner moon Enceladus poses in this Cassini spacecraft image. North is up in the dramatic scene captured during November 2016 as Cassini's camera was pointed in a nearly sunward direction about 130,000 kilometers from the moon's bright crescent. In fact, the distant world reflects over 90 percent of the sunlight it receives, giving its surface about the same reflectivity as fresh snow. A mere 500 kilometers in diameter, Enceladus is a surprisingly active moon. Data and images collected during Cassini's flybys have revealed water vapor and ice grains spewing from south polar geysers and evidence of an ocean of liquid water hidden beneath the moon's icy crust.
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
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
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
双腿残疾的我，下半生的心愿
发表于：2023-03-22 15:47:16
梦中的女孩，对我说：我愿意
发表于：2022-02-23 01:30:04
梦中和研究数学物理学，遇到几个著名人物
发表于：2023-04-11 02:41:33
准备转入中文写作
发表于：2022-01-01 09:13:19
决定采纳新风格完成我的作品
发表于：2023-05-02 01:06:28
今天，最后一次机会
发表于：2023-06-26 16:20:47
老爸被别人赠送一套路由设备
发表于：2022-01-14 12:28:43
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