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全部话题 - 话题: nebula
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d*********2
发帖数: 48111
1
【 以下文字转载自 USANews 讨论区 】
发信人: helloterran (hi you), 信区: USANews
标 题: NBA在”多元化“测评中获得最高分
发信站: BBS 未名空间站 (Thu Oct 27 16:16:26 2016, 美东)
白左所说的多元化究竟是什么意思,大家明白了么?
http://www.nba.com/2016/news/07/14/report-nba-remains-best-in-diversity-hiring.ap/
http://nebula.wsimg.com/6e1489cc3560e1e1a2fa88e3030f5149?AccessKeyId=DAC3A56D8FB782449D2A&disposition=0&alloworigin=1
M******8
发帖数: 10589
2
【 以下文字转载自 Military 讨论区 】
发信人: Math1978 (数学), 信区: Military
标 题: 决不允许日语玷污中文|大象公会
发信站: BBS 未名空间站 (Sun Jan 21 21:05:44 2018, 美东)
https://baijiahao.baidu.com/s?id=1590052940307150526
搭配部落
百家号01-20 04:11
一百多年前,面对「主义」「社会」「经济」等日本词的入侵,中国人民发出了最后一
次徒劳的呐喊。
文|韩索虏
在中国互联网盛行的种种抵制外国活动中,历来声势最为浩大的抵制日货,一直也是最
长盛不衰的主题。
不过近年以来,反对者也日渐增多,他们甚至准备了一个「日货」名单,问那些「爱国
者」是否打算一并抵制:
科学、干部、指导、社会、主义、市场、背景、化石、环境、艺术、医学、交流、否定
、肯定、假设、反对、高潮、解放、供给、说明、方法、共同、阶级、公开、希望、活
动、命令、失踪、投资、抗议、化妆品、银行、空间、警察、经验、经济、恐慌、现实
、元素、建筑、杂志、国际、时间、市长、失恋、宗教、集团、新闻、记... 阅读全帖
i*********g
发帖数: 1940
3
来自主题: Literature版 - 帮我改一改英文藏头诗 (转载)
【 以下文字转载自 Joke 讨论区 】
发信人: ilovespring (spring), 信区: Joke
标 题: 帮我改一改英文藏头诗
发信站: BBS 未名空间站 (Wed Feb 12 19:43:19 2014, 美东)
ONLY YOU ARE ON MY MIND 十八行诗分三段,描写秋冬夏
你要是看着眼熟,别笑话我,藏头太难写了,实在没灵感了
Ocean's end I am searching
Neglected meandering rivers looking away
Lonely castle stands in the autumn mist
Yellow forest stretches a thousand mile from the sea,
You said look for what we miss,
Overlooked road leads to dismay.
Under the starlit sky of a winter night
Alone I stand talking to Ernest Hemingway
Rememb... 阅读全帖
i***h
发帖数: 12655
4
那这个奖是直接颁给楼顶中文小说的?
还是得奖以后翻译到中文的?

Nebula
d*******d
发帖数: 1341
5
nzg是作者本人。
发信人: nzg (lcx), 信区: SF
标 题: 星云奖
发信站: 水木社区 (Sat Feb 21 01:37:06 2015), 站内 [累计积分奖励: 0/100]

《地球往事》第一部《The Threebody Problem》获美国科幻奇幻协会2014年星云奖提
名。
http://www.sfwa.org/2015/02/2014-nebula-awards-nominees-announc
d*******d
发帖数: 1341
6
nzg是作者本人。
发信人: nzg (lcx), 信区: SF
标 题: 星云奖
发信站: 水木社区 (Sat Feb 21 01:37:06 2015), 站内 [累计积分奖励: 0/100]

《地球往事》第一部《The Threebody Problem》获美国科幻奇幻协会2014年星云奖提
名。
http://www.sfwa.org/2015/02/2014-nebula-awards-nominees-announc
d*******d
发帖数: 1341
7
来自主题: paladin版 - 乔治 R.R.马丁谈《三体》
http://grrm.livejournal.com/426205.html
Reading for Hugos
May. 3rd, 2015 at 5:11 PM
In my copious spare time (hoo-hah), I am continuing to work my way through
the ballot for this years's Hugo Awards.
Just finished THE THREE-BODY PROBLEM, by Cixin Liu, originally written in
Chinese and translated by Ken Liu. This was the novel that just missed in
the original round of nominations, only to secure a place on the ballot when
Marko Kloos withdrew. In a half-century of Hugo Awards, there have been
ver... 阅读全帖
a***s
发帖数: 1084
8
2015 Weekend Details
The Science Fiction and Fantasy Writers of America’s 50th Annual Nebula
Awards Weekend will be held in Chicago, Illinois June 4 through 7, 2015.
周末出结果,不知道大刘的三体有没有戏。
v*******e
发帖数: 11604
9
到处没消息,但是在google 搜 nebula award,右边出现2015winner,他没得到,差一
c**c
发帖数: 2593
10
来自主题: Reader版 - Re: 再推荐一些书吧.

Hehe, that's one of the reasons I like this book. A novel
written a dozen years ago precisely predicted the possible
situations of today's internet.
Actually I read the sequel "Speaker for the Dead" first.
I was puzzled by the high praises everybody sang for it.
It didn't make sense. Yes, the book was well-written, but
since it won both Hugo and Nebula awards, I had expected
more.
But after I read the "Ender's Game", I understood. Ender's
Game was so great a work, it became a background in most
z**e
发帖数: 491
11
来自主题: Reader版 - 谁看过Neuromancer
曾经是上课的必读,当时英文奇烂,读不明白,就找了本中文的来读,叫神经狼游者,竟
然还是不明白
后来看完了,知道讲的是什么了。是科幻小说历史上的经典之作来着吧,Matrix都借鉴了
不少它的concept。cyberpunk什么的。
不知道有谁读过么,请教一些感想?
简介:
Here is the novel that started it all, launching the cyberpunk generation,
and the first novel to win the holy trinity of science fiction: the Hugo
Award, the Nebula Award and the Philip K. Dick Award. With Neuromancer,
William Gibson introduced the world to cyberspace--and science fiction has
never been the same.
Case was the hottest computer cowboy cruising t
w********h
发帖数: 12367
12
来自主题: Reader版 - Nebula Awards
不知道为什么,我对于科幻小说一直不感冒,
倒是很喜欢报道科学发现的一些书籍,
比如,《完美的对称》《上帝不可捉摸》《双螺旋》,
儿时看到的《黑猩猩在召唤》中的珍妮-古代尔出现在这期的国家地理杂志上面,
重回森林。珍妮老了。她感动了几代人。
基本上就是喜欢看看这些平实而且真实的故事了,
科学家的分歧、争执乃至分道扬镳,
在生活中也是不鲜见的,毕竟是人,
而且是重视名誉的个体。
读两本杂志,
国家地理和科学美国人。
间或从图书馆里借中文书,
不太有多少机会看了。
BBS上有趣的人不少,
值得读的却不多,
几乎没有什么有益的东西。
很少再有耐心看文。
这里谈文学、谈历史、谈政治、谈诗歌,
还不是业余水准。
专业水准的大部头不去看,去看BBS的小鬼小怪,
不上算。
s*****n
发帖数: 430
13
来自主题: Reader版 - Nebula Awards
国家地理杂志订了两年,一般只看照片。
NewYorker买了一年多,一般看影评,和小说。
Newsweek订了两年多,总是从后往前看,那个讽刺漫画还不错。
漫画看Dilbert, Get Fuzzy, Herman。
you have to have a cynical fat cat to live with. :D
BBS最主要的作用就是认识些有趣的人,当然别人也灌水。
or
发帖数: 720
14
来自主题: Reader版 - Nebula Awards

some scific writers are damn intelligent, like asimov & u. le guin. they were
knowledgable & were super in the pure sense of writing. asimov..no need to
talk about;-P le guin's fics covered a lot on social
science/philosophy/mythology. she was much influenced by zhuangzi. the
writing itself would lay shame on those authors who dumbed down scific as
nonsense; it was more than exerllent. i remember when i began to read her
works, merely for a change from asimov, i had to pause over lines, a
s***s
发帖数: 1841
15
来自主题: Reader版 - Nebula Awards
i always read books from last page to first page
hehe
s*****n
发帖数: 430
16
来自主题: Reader版 - Nebula Awards
hoho, whatesle you can do?
my dad always complains that i bought too much of newspaper he can't
finish them before others come.
w********h
发帖数: 12367
17
来自主题: Reader版 - Nebula Awards

只是觉得科幻作品是我小时候的favorite,
里面有太空阿,幻想阿,星云阿...
逐渐科学成为了生活中的大部分,
科学作为现实存在于周围,
并且非常solid,
我是不太会再对general的一些比如畅想二十二世纪或者外星上
有什么东西再有强烈的兴趣。
小时候曾经有过两本中国科学家写的科普著作,
二十一世纪已经来了,
我们还是没有全面太阳能,
人人有太阳能氢能的小飞机,
或者随意充气建造的大房子。赫赫。
小时候读到的一篇关于高分子材料的科普文章,
居然作者是以后上大学时候的原来的系主任,哈哈。
你是科学的门外女,不看也罢。
第一本我觉得最好,因为个人专业倾向。
非常翔实地反映了整个C60分子的发现过程,
所有的实验和分析过程我都是熟悉的,
部分人的大名也是知道的,
所以特别喜欢那本。
第二本是物理学家写物理学家,
来得困难点。恐怕是公认的最好的爱因斯坦的传记和那个时代的科学史。
第三本是Watson自己写的,
在当时与DNA发现相关的人士的抗议声中出版的,
中间对于重要的贡献者,女科学家Rosalind Franklin有非常严重的偏见。
在三月份的Physics Today上已经
c**c
发帖数: 2593
18
来自主题: SciFiction版 - 从奖项看科幻(0) Introduction
俺个人的感觉, 英文科幻小说浩如烟海, 不是人力可以穷尽的.
不可能全看, 就只能挑着看. 那么挑哪些看呢? 简单的办法,
就是挑人家说好看的来看.:) 比较可靠的依据, 自然是科幻界
的那几个每年一次的大奖, 尤其是雨果奖(Hugo Award)和星云
奖(Nebula Award). 能得这些奖的小说, 甚至不需最终得奖,
只要能入围(Nomination List), 就可以算是当年得到最广泛
承认的作品了.
雨果奖从1953年开始评选, 星云奖从1965年开始, 这几十年来
的优秀科幻作品, 基本上都被这两项奖一网打尽了. 俺刚开始
猛看英文科幻的时候, 就是抱着这两项奖的历年获奖或提名名
单, 登录到图书馆查寻系统里头按图索骥的.
米国科幻界群星璀灿, 你方唱罢我登场, 各领风骚三数年, 这
些个获奖提名名单反复看得多了, 竟也看出了些规律, 看出了
些风云际会的故事.
c**c
发帖数: 2593
19
来自主题: SciFiction版 - [转载] Re: 再推荐一些书吧.
【 以下文字转载自 Reader 讨论区 】
【 原文由 calc 所发表 】
Hehe, that's one of the reasons I like this book. A novel
written a dozen years ago precisely predicted the possible
situations of today's internet.
Actually I read the sequel "Speaker for the Dead" first.
I was puzzled by the high praises everybody sang for it.
It didn't make sense. Yes, the book was well-written, but
since it won both Hugo and Nebula awards, I had expected
more.
But after I read the "Ender's Game", I understood. Ender's
Game was so great
t****n
发帖数: 1347
20
我要是晚生个十年, 去抄上一段
Nebula Award 里的短篇(前两天还看来着), 估计也没人知道.
d*******r
发帖数: 432
21
来自主题: SciFiction版 - 两个意外

"Speaker for the dead" and "xenocide" are indeed not upto the same level as
"Ender's Game". But they're still better than ur everage sci-fi offerrings.
And "speaker for the dead" (as well as Ender's Game) won both hugo and nebula.
Another book by Card is "songmaster", I guess it's more fantasy than sci-fi,
but it's very good. Card is a very good story teller.
Compare to ur average sci-fi writers, for some reason Card wrote much more
short fictions, there're some real gems. He has two published
s******l
发帖数: 278
22
Chapter 35
That night, as the Heart of Gold was busy putting a few light
years between itself and the Horsehead Nebula, Zaphod lounged
under the small palm tree on the bridge trying to bang his brain
into shape with massive Pan Galactic Gargle Blasters; Ford and
Trillian sat in a corner discussing life and matters arising from
it; and Arthur took to his bed to flip through Ford's copy of The
Hitch Hiker's Guide to the Galaxy. Since he was going to live in
the place, he reasoned, h
d***e
发帖数: 66
23
科幻大奖巡礼(3)约翰.坎伯纪念奖(上)
(The John W. Campbell Memorial Award)
◎猫昌
科幻界里头的著名大奖,一般而言不出雨果(Hugo)或星云(Nebula)。然而
在这两个奖项之外,还有不少具有公信力、代表性的奖项。有的奖颁发对象设
有限制,像是普罗米修斯奖(Prometheus Award)和菲利普.迪克奖(Philip
K. Dick Award);有的则是杂志办的读者票选奖,例如《轨迹》票选奖(
Locus Poll Award)、《科幻编年》奖(SF Chronicle Award)等;剩下的大
概就是地区意味浓厚的各国首奖了。给奖对象和两大奖相去不远的,就是这一
个约翰.坎伯纪念奖(简称 JWCMA,大夥儿可不要把这个奖跟约翰.坎伯之最
佳新进作家奖(John W. Campbell Award,JWCA)搞混)了。
JWCMA 同样也是为了纪念坎伯这位科幻界大老而设立的。坎伯于1971年逝世之
后,由哈利.哈利森(Harry Harrison)与布莱恩.艾迪斯(Brian W.
Aldiss)这两位科幻大师级人物所创办。1973年假
c**c
发帖数: 2593
24
来自主题: SciFiction版 - 正在看Ringworld
Ringworld was written by Larry Niven.
Won both Hugo and Nebula awards of 1970.
c*****r
发帖数: 2426
25
来自主题: SciFiction版 - The Wheel Of Time 好看嘛?
好不容易看完了Ender's Game的整个系列sequel+syquel,真是好看
,把俺的作息规律完全打乱了的说。最喜欢的书是Speaker For The
Dead, 不愧是Hugo Winner + Nebula Winner,
不过最喜欢的人物是Bean,很遗憾Orson Card没有顺着这个人物和时
代继续往下写。比较让俺生气的是Peter一统天下的故事根本没交代
。不知道看过的人是不是有同感?Card的文笔俺很是喜欢,他还有其
他的几个系列和单行本,据说那个有关Alvin的系列也不错,看过的
大侠是否可以给点建议?要是一般般俺就暂且找找别的好书看。
The Wheel Of Time这个系列目前已经有九本了,有些犹豫是不是开
始看(真是长啊),不过古代大陆+战争+魔法的故事一向是俺比较偏爱
的类型。Robert Jordan还可以吗?恕小弟孤陋寡闻。
版主大人如果有闲请推荐一些作者和好书给俺,或者给一些本版文章
号,俺可以自己到精华区去找找。谢谢了先!
t*******n
发帖数: 4445
c**c
发帖数: 2593
27
来自主题: SciFiction版 - 2002 Nebula Awards Are Out
that's about half year old. did u mean to say
this year's hugo awards r just out? :P
t*******n
发帖数: 4445
c****t
发帖数: 19049
29
来自主题: SciFiction版 - Science Fiction Novels in 2011
2011 is shaping up to an amazing year for Speculative Fiction at large not
just Fantasy although that is looking damn good all by itself. My Sci-Fi
list last year was only 7 books long, which grew a little with the year, but
it was so short I combined it with UR and Steampunk picks. This year Sci-Fi
warrants a post all its own with loads of debuts and returning stars. The
people claiming Sci-fi is dying or already dead should shear the wool off
their eyes and see what is brewing.
Science Fictio... 阅读全帖
m****a
发帖数: 2593
30
来自主题: SciFiction版 - 三体英文版10月要出了
三体获星云奖提名
http://www.sfwa.org/2015/02/2014-nebula-awards-nominees-announc
Amazon上现在186个review,平均4.5星
m****a
发帖数: 2593
31
来自主题: SciFiction版 - 三体英文版10月要出了
三体获星云奖提名
http://www.sfwa.org/2015/02/2014-nebula-awards-nominees-announc
Amazon上现在186个review,平均4.5星
m****a
发帖数: 2593
32
来自主题: SciFiction版 - 三体英文版10月要出了
乔治 R.R.马丁谈《三体》
乔治 R.R.马丁读完了《三体》,称“I liked THREE-BODY PROBLEM, but I can't say
I loved it”,很期待看第二部。认为《三体》当得起获雨果奖提名,并很有可能获
得雨果奖,而且他还很确定《三体》非常有望获得星云奖:http://grrm.livejournal.com/426205.html
Reading for Hugos
May. 3rd, 2015 at 5:11 PM
In my copious spare time (hoo-hah), I am continuing to work my way through
the ballot for this years's Hugo Awards.
Just finished THE THREE-BODY PROBLEM, by Cixin Liu, originally written in
Chinese and translated by Ken Liu. This was the novel that just missed in
the o... 阅读全帖
n**4
发帖数: 719
33
摘要
The Infrared Search for Extraterrestrial Civilizations with Large
Energy Supplies. III. The Reddest Extended Sources in WISE
Astrophysics > Astrophysics of Galaxies
(Submitted on 14 Apr 2015 (v1), last revised 15 Apr 2015 (this version, v2))
Nearby Type III (galaxy-spanning) Kardashev supercivilizations would have
high mid-infrared (MIR) luminosities. We have used the Wide-field Infrared
Survey Explorer (WISE) to survey ~1×105 galaxies for extreme MIR emission,
103 times more galaxies th... 阅读全帖
o*****i
发帖数: 433
34
这个菜谱没写清楚,又是叉烧肉又是大头菜的,而且白醋不知道用来干啥。
但是把制作碱面写得一点难度都没有哈~俺觉得大家可以买那种做spaghetti的机器来轧面
============================
发信人: nebulae (紫色星云 * 恶灌满盈), 信区: Food
标 题: 家常菜--热干面
发信站: BBS 水木清华站 (Sun Oct 20 20:57:56 2002)
主 料 (制25碗),上白面粉2500克
调 料 虾米55克,芝麻酱250克,小磨芝麻油100克,叉烧肉60克,大头菜100克,酱油750克,辣椒面25克,味精15克,白醋100克,纯碱20克,葱花100克,芝麻油50克
特 点 面条纤细根根有筋力,色泽黄而油润,滋味鲜美。拌以香油、麻酱、虾米、五香酱菜等配料,更具特色。
种 类 饭面粥类
制作过程
1、面粉加碱水和成面团,且要上劲。
2、先将已和好的面在轧面机的滚筒里轧成6~7毫米厚的长面片,然后再叠双层,再轧,边轧边洒上扑面,轧成约4毫米厚的薄面片。分别用面棍卷好,再将卷好的面片放到轧面机架上,轧成直径3~4毫米的圆面条。
f********l
发帖数: 435
35
AppShopper has the Dark Nebular Game free this week.
b**g
发帖数: 335
36
【 以下文字转载自 Computation 讨论区 】
发信人: borg (伦理审查协会), 信区: Computation
标 题: 中国超级计算机"天河一号" 被超越排名降至第二
发信站: BBS 未名空间站 (Tue Jun 21 15:47:07 2011, 美东)
国际TOP500组织20日在网站上公布了最新全球
超级计算机500强排行榜,日本超级计算机
“京”则以每秒8162万亿次的实测运算速度跻
身榜首,中国的“天河一号”排名降至第二,
但中国进入榜单的超级计算机总数在全球仅次于
美国。
这份排行榜还显示,中国的超级计算机数量不
断增加,包括实测运算速度达2600万亿次的
“天河一号”和排名第四的“星云”在内,进
入排行榜的超级计算机系统已达62个,第三名
德国是30个。中国超级计算机系统无论是总数
还是累计峰值运算能力都超过了德、日、法等
传统的超级计算机大国,美国则以256个遥遥
领先于其他所有国家。
As of today, the current top 10 supers are:
8.16 petaflops, K computer, Japan
2.57... 阅读全帖
a**********k
发帖数: 1953
37
这家做Openstack的startup很有名:
http://www.nebula.com/press/
a**********k
发帖数: 1953
38
这家做Openstack的startup很有名:
http://www.nebula.com/press/
t**t
发帖数: 27760
39
来自主题: Hardware版 - Top500更新了
1 Oak Ridge National Laboratory
United States Jaguar - Cray XT5-HE Opteron Six Core 2.6 GHz / 2009
Cray Inc. 224162 1759.00 2331.00 6950.60
2 National Supercomputing Centre in Shenzhen (NSCS)
China Nebulae - Dawning TC3600 Blade, Intel X5650, NVidia Tesla C2050 GPU /
2010
Dawning 120640 1271.00 2984.30
3 DOE/NNSA/LANL
United States Roadrunner - BladeCenter QS22/LS21 Cluster, PowerXCell 8i 3.2
Ghz / Opteron DC 1.8 GHz, Voltaire Infiniband / 2009
IBM 122400 1042.00 1375.78 2345.50
4 National Inst
f*r
发帖数: 3968
40
来自主题: Astronomy版 - NGC 2440(英文原文)
NGC 2440(英文原文)
译:Jack
NGC 2440是另一个行星状星云,但它较NGC 2346有更加复杂的结构。NGC 2440的中央
星是已知最热的恒星之一,表面温度大约200,000摄氏度。其周围星云的复杂结构暗示天
文学家那儿存在源自中央星的周期性的喷射,有点类似NGC 2346。但是对于NGC 2440,每
次喷射的方向是不确定。同时,星云中充满着尘埃云,它们形成了从中央星向外辐射的暗
而长的条纹。另外,对于其中明亮的星云,是由于受中央星辐射的紫外线激发所至。NGC
2440被一个大而冷的星云所包围,它在一般的望远镜中是不可见,但在红外望远镜中却可
以被探测到。NGC 2440坐落在距地球4,000光年的船尾座内。

此照片由哈勃Heritage小组获得。
译自 哈勃网站(http://oposite.stsci.edu
NGC 2440
(Chinese Version)
NGC 2440 is another planetary nebula ejected by a dying star, but it has
f*r
发帖数: 3968
41
蝴蝶状的“派碧隆”(Papillon)星云揭示大质量恒星诞生之谜(英文原文)
译:Jack
NASA哈勃太空望远镜对位于N159中的恒星诞生区进行了观测,N159坐落在离我们170
,000光年远的伴星系——大麦哲伦星云中。其中,来自新生大质量恒星的星风奔流着穿
过大星云中的脊状和丝状结构。

译自 哈勃网站(http://oposite.stsci.edu
A Butterfly-Shaped "Papillon" Nebula Yields Secrets of Massive Star Birth
(Chinese Version)
A NASA Hubble Space Telescope view of a turbulent cauldron of starbirth,
called N159, taking place 170,000 light-years away in our satellite galaxy,
the Large Magellanic Cloud (LMC). Torrential stellar w
s******o
发帖数: 298
42
By Robert Roy Britt
Senior Science Writer
posted: 07:00 am ET
11 April 2002
Astronomers have found the remnants of a thousand dead and dying stars in the
southern part of the Milky Way Galaxy they described as a galactic graveyard.
The findings, from a new sky survey, roughly doubles the known number of so-
called planetary nebulae. These are a poorly named class of objects that
represent the relics of stars that have made their dying gasps by casting
waves of gas and dust into space to create o
s******o
发帖数: 298
43
来自主题: Astronomy版 - The Milky Way Eats One of Its Own [zz]
A halo globular cluster gets shredded by our galaxy.
by Phil Plait
Orbiting the Milky Way can be hazardous to your health. Although most objects
serenely orbit our home galaxy, astronomers are now detecting invisible deadly
forces wreaking havoc upon some of them. Gravity, which keeps star, clusters,
and nebulae bound to the Milky Way, can also tear them apart.
The newest victim found is Palomar 5, a roughly 13-billion-year-old globular
cluster 75,000 light-years away. New observations of the cl
s*****t
发帖数: 1994
44
M51: Cosmic Whirlpool
Explanation: Follow the handle of the Big Dipper away from the dipper's bowl, until you
get to the handle's last bright star. Then, just slide your telescope a little south and west and
you'll likely find this stunning pair of interacting galaxies, the 51st entry in Charles
Messier's famous catalog. Perhaps the original spiral nebula, the large galaxy with well
defined spiral structure is also cataloged as NGC 5194. Its spiral arms and dust lanes clearly
sweep in front of i
f*r
发帖数: 3968
45
来自主题: Astronomy版 - [转载] Re: 1054年7月4日
【 以下文字转载自 Physics 讨论区 】
【 原文由 szbd 所发表 】
在我國悠久的歷史中存有豐富的天文紀錄。「官方」的天文學家 ─── 欽天監
─── 負責觀測並記錄包括彗星、流星雨等天象。其中有一類天體稱做「客星」
,意該位置上原來沒有可見的星,後來突然出現一顆,故以客名之。在1054年,即
宋朝至和元年,在《宋會要》中就有一顆「客星」的記載:『至和元年五月晨出東
方,守天關,晝見為太白,芒角四出,凡二十三日』,也就是如今我們稱之為金牛
座的區域有一星突然出現,白天都能見到如金星那樣的光芒。也就是說它最亮時達
到了負2等(一般人們裸眼最暗能觀測到6等星),而隨後將近一個月的時間亮度維
持在6等以上。
「客星」是什麼呢?根據天文學家的研究,其中大部分是新星 (nova),少部份則
是超新星 (supernova)。現在證實在中國古籍中記錄下的超新星有八次之多。當然
最著名的是1054年的那一次,因為在天空的那個位置後來出現了一個美麗的星雲,
因其形狀像一隻螃蟹而被人們稱之為「蟹狀星雲」 (Crab Nebula;圖一)。更重要
的是在1968年在其中偵測到一顆脈衝星 (pu
s*****t
发帖数: 1994
46
来自主题: Astronomy版 - Astronomy Picture of Day: Spiral Galaxy
Spiral Galaxy NGC 300
Credit: M. Schirmer (IAEF, Bonn), W. Gieren (Univ. de Concepcisn, Chile), et al., ESO
Explanation: NGC 300 is so interesting because it is so normal. An Sc-type spiral galaxy in the
nearby Sculptor group of galaxies, NGC 300 shows typical flowing blue spiral arms, an expected
compact nucleus, and the requisite amount of stars, star clusters, and nebulae. Therefore,
studying NGC 300 should indicate how, exactly, a normal spiral galaxy works. Toward this goal,
NGC 300 and t
j*c
发帖数: 97
47
http://schmidling.netfirms.com/weekly.htm
these are pictures taken by "professional" amateur.
r***o
发帖数: 1285
48
Explanation: It is the most famous star cluster on the sky. The Pleiades can
be seen without binoculars from even the depths of a light-polluted city.
Also known as the Seven Sisters and M45, the Pleiades is one of the brightest
and closest open clusters. The Pleiades contains over 3000 stars, is about
400 light years away, and only 13 light years across. Quite evident in the
above photograph are the blue reflection nebulae that surround the bright
cluster stars. Low mass, faint, brown dwarfs ha
w****l
发帖数: 344
49
来自主题: Astronomy版 - 每日一图 巨蟹星雲和土星
http://www.phys.ncku.edu.tw/~astrolab/mirrors/apod/image/0301/saturnm1_wodaski_c2
.jpg
巨蟹星雲和土星
影像提供: Ron Wodaski, Newastro Remote Telescope at New Mexico Skies
說明: 上個月是土星(Saturn) 最靠近地球的時候,它正漫遊在金牛座(Taurus)內,
在子夜裡慢慢地上升到最高點,向觀測星空的愛好者展示可愛的環。 在一月四號及
五號,土星橫越過高而遙遠的 巨蟹星雲(Crab Nebula, M1)的前面,這星雲是星球爆
炸後產生宇宙星塵聚集的雲氣,也是天文學家Charles Messier 圖鑑中第一個被記錄
的星體。 但 土星和巨蟹星雲 無法好好的在一起合照,因為土星的亮度幾乎掩蓋星
雲漫射的光線,當土星通過時更會完全地覆蓋巨蟹星雲。 這張照片是取自於一月二
日,那天是他們最接近的前兩天,這張重疊的數位影像正說明了它們之間無法一起合
照的問題. 在圖片的右邊可以看到隱隱約約的巨蟹星雲 ,而在左邊土星太亮的光線
造成CCD過度曝
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