每日一图 (每日约13.30更新)
Why is this asteroid a double? Earlier this month the Japanese robotic spacecraft Hayabusa2 shot past asteroid 98943 Torifune and captured pictures. Although previous observations from distant Earth indicated that Torifune was oblong, Hayabusa2 found that Torifune actually has two joined lobes. With a length of about four soccer fields, this space rock frequently comes near the Earth as it orbits the Sun, although it is not a threat. Besides the two lobes, Torifune shows many large boulders, but, surprisingly, no obvious craters, likely because its surface is a pile of rubble. Like asteroid Arrokoth, it appears that each lobe formed separately before colliding and becoming stuck together. Hayabusa2 famously encountered asteroid Ryugu in 2018, and now heads for an encounter in 2031 with 1998 KY26, a smaller asteroid that rotates unusually fast and might have reservoirs of ice.
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
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
睡梦中与女孩亲吻
发表于：2023-04-23 03:51:36
网络接触对我来说有些轻浮
发表于：2022-07-04 02:50:36
每一期无法命中大奖都是悲哀
发表于：2023-01-31 00:30:36
全自动洗衣机第一次到位
发表于：2023-05-12 15:57:44
犯了错误，明早未必能减重
发表于：2022-09-09 17:45:51
我们的未来该怎样度过
发表于：2022-06-19 10:53:13
风雨后才能见彩虹
发表于：2023-02-02 01:41:42
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