每日一图 (每日约13.30更新)
It is still not known why the Sun's light is missing some colors. Here are all the visible colors of the Sun, produced by passing the Sun's light through a prism-like device. The spectrum was created at the McMath-Pierce Solar Observatory and shows, first off, that although our white-appearing Sun emits light of nearly every color, it appears brightest in yellow-green light. The dark patches in the featured spectrum arise from gas at or above the Sun's surface absorbing sunlight emitted below. Since different types of gas absorb different colors of light, it is possible to determine what gasses compose the Sun. Helium, for example, was first discovered in 1868 on a solar spectrum and only later found here on Earth. Today, the majority of spectral absorption lines have been identified - but not all. Free APOD Lecture in Phoenix: Wednesday, December 10 at 7 pm
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
睡梦中与女孩亲吻
发表于：2023-04-23 03:51:36
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
双腿残疾的我，下半生的心愿
发表于：2023-03-22 15:47:16
我的失败的前半生（1）
发表于：2022-03-20 14:29:17
决定研究最新的9.3.6版本laravel
发表于：2022-09-04 17:29:20
梦见父亲给用软尺量我腰围
发表于：2022-09-04 23:00:20
又碰见一次蜂蜜瓶子爆裂
发表于：2022-02-12 02:20:56
花费4.23元购入一个光电鼠标
发表于：2022-10-29 17:09:34
准备研究redis 的pv,uv功能
发表于：2022-01-22 02:50:21
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