s*****t
发帖数: 1994 | 1 Sedna of the Outer Solar System
Illustration Credit: R. Hurt (SSC-Caltech), JPL-Caltech, NASA
Explanation: What is the most distant known object in our Solar System? A new answer to this centuries-old question was announced yesterday by NASA with the discovery of a dark red object dubbed Sedna. Although over twice the distance to Pluto, Sedna is
near its closest approach to the Sun. Sedna's highly elliptical orbit will further displace it by 10 times, making it a candidate for the long-hypothesi |
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s*****t
发帖数: 1994 | 2 Sedna of the Outer Solar System
Illustration Credit: R. Hurt (SSC-Caltech), JPL-Caltech, NASA
Explanation: What is the most distant known object in our Solar System? A new answer to this centuries-old question was announced yesterday by NASA with the discovery of a dark red object dubbed Sedna. Although over twice the distance to Pluto, Sedna is
near its closest approach to the Sun. Sedna's highly elliptical orbit will further displace it by 10 times, making it a candidate for the long-hypothesi |
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g******a
发帖数: 667 | 3 【 以下文字转载自 Astronomy 讨论区 】
【 原文由 gardenia 所发表 】
Astronomers have discovered another TNO last year, but this time the
one they found is quite large: 1100 miles across, almost 3/4 the size of
Pluto.
It is tentatively named Sedna, the Innuit Goddess of Sea.
Sedna is currantly about 90AU away from the Sun, and in its perihelion
it might move as close as 72AU to the Sun. Its orbit, however is quite
elliptic. It is believed its aphelion can be as far as 1000AU.
Sedna is too small to be a planet. It's n |
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g******a
发帖数: 667 | 4 Astronomers have discovered another TNO last year, but this time the
one they found is quite large: 1100 miles across, almost 3/4 the size of
Pluto.
It is tentatively named Sedna, the Innuit Goddess of Sea.
Sedna is currantly about 90AU away from the Sun, and in its perihelion
it might move as close as 72AU to the Sun. Its orbit, however is quite
elliptic. It is believed its aphelion can be as far as 1000AU.
Sedna is too small to be a planet. It's not a KBO, either, for it's too
far away. It cou |
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g******a
发帖数: 667 | 5 来自主题: _Astronomy版 - Sedna Astronomers have discovered another TNO last year, but this time the
one they found is quite large: 1100 miles across, almost 3/4 the size of
Pluto.
It is tentatively named Sedna, the Innuit Goddess of Sea.
Sedna is currantly about 90AU away from the Sun, and in its perihelion
it might move as close as 72AU to the Sun. Its orbit, however is quite
elliptic. It is believed its aphelion can be as far as 1000AU.
Sedna is too small to be a planet. It's not a KBO, either, for it's too
far away. It cou |
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S*********f
发帖数: 1938 | 6 ☆─────────────────────────────────────☆
LSSL (累死算了...) 于 (Mon Mar 22 20:53:26 2010, 美东) 提到:
网上认识的，见过一次面，我对她有感觉，我觉得她就是我要找的那种女孩子。我离她
比较远，联系方式基本都是打电话。我是那种不爱说话的人，一天或者几天不说一句都行。
我心里其实是想和她说话，平时脑子里总会不由自主的想起她，但给她电话的时候却不知道说什么，
每次说不了几分钟就挂了。每次打完电话我都想扇自己几个耳光。
所以现在很郁闷，到底该怎么办呢?打电话吧，也没啥说的，我自己也都不好意思打电话了。
不打电话吧，那怎么联系、互相了解呢？她不经常查邮箱，我给她写过信，好久才回的。
其实不管打不打电话，目的都是增加了解。如果不打电话，其他该做什么呢？如果打电话，
电话里都说些啥呢？我平时一天大都在实验室，也没啥事要讲的。
有没有人能提供点建议，多谢了。。。
☆─────────────────────────────────────☆
sedna (sedna) 于 (Mon Mar 22 20:57 |
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j*****t
发帖数: 2397 | 7 那玩意不大，一个人搬很轻松。放sedna的后座很轻松 |
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d******2
发帖数: 2795 | 8 http://en.wikipedia.org/wiki/David_J._Wineland
Godfather - trapped ion quantum computing
David Jeffrey Wineland[1] (born February 24, 1944[2]) is an American
physicist at the National Institute of Standards and Technology (NIST)
physics laboratory and the University of Colorado in Boulder. His work has
included advances in optics, specifically laser cooling of ions in Paul
traps and use of trapped ions to implement quantum computing operations. In
2012 he received the Nobel Prize in Physics.[3]... 阅读全帖 |
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L**********s
发帖数: 12988 | 11 是，有高有低，潮起潮落，the cycle, rhythm and flow of life.
地球围绕太阳转很久？新发现的那个Sedna呢？情何以堪啊，哈哈哈
的。 |
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g******a
发帖数: 667 | 12 这个应该就是Forever War里面描述的那个Charon了。。。呵呵。。。 |
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g******a
发帖数: 667 | 13 而且发现这颗星够大的。。。
以后要是打算terraform Venus，先把这颗星撞上去，提供的水分应该足够把金星
整个大气层都溶解进去了，呵呵。。。 |
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c**c
发帖数: 2593 | 14 要把那么远那么大的东西拽到水星轨道，恐怕不容易吧，呵呵。
有这么多时间，大概总能找到其他更经济的方法来改造水星。。。 |
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