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全部话题 - 话题: space
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s*****t
发帖数: 1994
1
来自主题: _Astronomy版 - Next-Generation Space Telescope Chosen
Next-Generation Space Telescope Chosen to Peer Into Past
By WARREN E. LEARY
WASHINGTON, Sept. 10 NASA chose a successor to the Hubble Space Telescope
today, announcing that it would launch a next-generation space observatory in 2010
that would study light produced in the earliest days of the universe.
The space agency selected TRW Inc., of Redondo Beach, Calif., to lead a team that will build
the observatory, which will be called the James Webb Space Telescope in honor of a
pioneering NASA
s*****t
发帖数: 1994
2
来自主题: _Astronomy版 - Astronomy Picture of Day: Fly Free in Space
To Fly Free in Space
Credit: STS-41B, NASA
Explanation: At about 100 meters from the cargo bay of the space shuttle
Challenger, Bruce McCandless II was further out than anyone had ever
been before. Guided by a Manned Maneuvering Unit (MMU), astronaut McCandless,
pictured above, was floating free in space. McCandless and fellow
NASA astronaut Robert Stewart were the first to experience such an
"untethered space walk" during Space Shuttle mission 41-B in 1984.
The MMU works by shooting jets of nit
c**i
发帖数: 6973
3
来自主题: Military版 - US Wants Space Rules
Tabassum Zakaria, US wants to talk outer space with China. Reuters, July 19,
2011.
http://www.reuters.com/article/2011/07/19
/us-usa-china-space-idUSTRE76I6F320110719
(to set the rules)
----------------------------------Separately
(1) Jeremy Page, China to Dive for Buried Treasures; Submersible is set to
hunt for valuable minerals in Pacific. Wall Street Journal, July 20, 2011
http://online.wsj.com/article/SB10001424052
702304567604576455930556290432.html
(US "in 1960 sent two men to the bottom ... 阅读全帖
p*******r
发帖数: 2204
4
China 'launches its first space station module'
http://news.yahoo.com/china-counts-down-space-module-launch-090
China on Thursday launched an experimental module into space, taking its
first step towards building a space station, state television showed.
Tiangong-1, or "Heavenly Palace", took off from the Gobi desert in China's
northwest, propelled by a Long March 2F rocket, late Thursday, ahead of
China's National Day on October 1.
Z**R
发帖数: 1233
5
There has been an explosion on the launch pad at the Kennedy Space Center in
Florida, where the aerospace company SpaceX was readying an unmanned rocket
for launch.
The cause of the blast is not clear and it is not known if anyone was hurt.
Nasa said SpaceX was test-firing a rocket which was due to take a satellite
into space this weekend.
Pictures from the scene show a huge plume of smoke rising above the Cape
Canaveral complex.
The force of the blast shook buildings several miles away.
Local e... 阅读全帖
x****o
发帖数: 21566
6
文 / 虎嗅网 2016年09月05日 12:50:58 0
SpaceX猎鹰火箭在8月底的这次爆炸,背后实际上牵涉到中国上市公司,也牵涉到未来
中国互联网的红利。
1、Amos-6并非Facebook所有
最近爆炸性足够的新闻,就是传奇人物Elon Musk的明星公司Space X的猎鹰9号火箭爆
炸的事件。这是一年左右Space X火箭第二次爆炸事件,Musk第一时间发了Twitter,初
步解释了爆炸的原因。 “猎鹰9号实在推进剂填充操作时发生的事故。起因应该是火
箭氧气罐出现故障,但具体原因不清楚,仍待进一步查明。”
这次爆炸之所以更加引人注目,因为牵涉到另外一家明星公司Facebook。因为猎鹰9号
火箭上搭载的卫星,正好与Facebook有关。这颗被称为Amos-6的卫星,是Facebook非洲
互联网计划的一部分。利用这颗卫星,Facebook可以为撒哈拉以南非洲提供互联网服务
。Facebook为偏远地区提供互联网宏伟计划里,这颗卫星的作用举足轻重。
恰好在非洲访问的Facebook的CEO马克·扎克伯格在自己的主页写到,很遗憾得知火箭
发射失败、卫星损毁的消息,这... 阅读全帖

发帖数: 1
7
来自主题: Military版 - Space X执行最难的一次发射
Space X是特斯拉老板旗下的航天企业,目前来说,其方向还是很不错的。毕竟来说,
NASA已经失去了往返宇宙的能力。他们急需一个方式,而之前是厚着脸皮求俄罗斯。
不仅仅要低三下四,还要给一大笔钱。而有了Space X的话,NASA可以说再也不用依赖
于俄罗斯了。
不过,与世界其他国家的发射不同的是。Space X的发射活动都是可以回收的。节约了
大量的成本,不过,在载人发射方面,还是不允许回收的。
而Space X这一次的发射任务可以说是难度最大的。它要同时完成4项任务,二级发动机
还要在空中点火4次。并且完成回收工作。
f*****u
发帖数: 322
8
来自主题: USANews版 - Space X开始承揽军方发射任务
Space X是美国钢铁侠马斯克的公司,这家公司的老板也投资了Tesla等等比较前沿的公
司。Space X的目标是成为一家能够服务于大众的民用航天公司。也就是他的客户不仅
仅是发射卫星的国家和组织。他还要将前往太空这一项现在只能是专业的宇航员完成的
任务,普及到全世界。
他还有一个计划,那就是登上火星,在火星上面创造一大片人类居住的环境。不过,实
现这些需要耗费巨资,那么现在开始就要赚钱。现在Space X依靠发射民用卫星来赚钱
,不过,最近开始承揽美国军方的生意了。美国军方的第三代GPS卫星就是利用Space X
的卫星发射升空的。
s********p
发帖数: 103
9
来自主题: Faculty版 - 关于lab space急问
发现学校assign给我(新faculty)的lab space很小,是和另外一个老师share一个lab
(有不到1000sqf),平均到我的space才四百多sqf, 如果只是用于做试验不用于学生
office的话,应该还够,但如果学生也要在里面,可以放试验器具,但做试验的地方应
该不够。不过,如果学生做实验时可以占用另外一个老师的space就可以。不晓得这种
和其他老师share lab的情况,一般是严格让学生做试验只用自己的那部分space(不到
500sqf)吗?还是不严格限制(可以在实验时占用1000sqf)?
谢谢!
b********o
发帖数: 1157
10
来自主题: FleaMarket版 - Tickets to Kennedy Space Center (转载)
【 以下文字转载自 Travel 讨论区 】
发信人: bujingniao (bubu), 信区: Travel
标 题: Tickets to Kennedy Space Center
发信站: BBS 未名空间站 (Mon Dec 31 21:09:29 2012, 美东)
I have five tickets to Kennedy Space Center in Florida for sale. Valid until
08/23/2013. Kennedy Space center is the only launch site for space shuttles
and it is only a 40 min drive from Orlando. It is on the Atlantic beach.
Original price $52 each. Willing to sell it for $35.
p****j
发帖数: 172
11
第一次买房,搬进来4个月了,发现laundry room下面有个一个房间大小的craw space
。inspection report上根本就没有写。craw space的入口在一个storage room里面,
没有被阻挡。昨天爬进去检查了一下,发现有一面墙(挨着garage)上面有一个缺口,
可能是预留的入口。问题就在这个缺口上:craw space地势很低的一面的土很潮湿,应
该是下雨时有水从哪个缺口里面渗透进来了。请问这种情况能告inspector吗?
另外,如果请人把这个缺口用水泥做起来,再把地面平整然后铺上水泥地,大概要多少
钱?craw space面积大概15平米左右。
h******n
发帖数: 2795
12
我家的Craw Space就有排水口。我去Craw Space好多次了。
如果没有排水口,且Craw Space进水,光靠Sump Pump抽水,在遇到暴雨的情况下,
Craw Space排水可能支撑不住。
a*****0
发帖数: 3319
13
院子花、vine、树挺多。发现crawl space 潮湿,有很新鲜的vine and weeds, 也许是
sprinkler 有水进foundation。Will the problem easily be solved if shuting
down the irrigation and removing all the weeds, roots, and vines in the
crawl space?
This place was suggested to have chemicals termiticide spayed to kill
subterranean termites. The entrance to the underground crawl space is in the
bedroom closet, is it safe for human health with the chemical spray in the
crawl space?
Thank you very much.
y****g
发帖数: 68
14
最近想买一个小房子用于出租,本来以为都还好,可是检查的时候发现,房子下面一部
分的crawl space 很潮湿,前一段时间下大雨,里面积过水,另外一边的crawl space
,根本就没有下去看的入口,所以什么情况都不知道。而且crawl space 很低,大概只
有2个ft高,据说人工会很贵。
房子是1940年的老房子,现在的问题是crawl space潮湿,另外一边情况不知道,attic
里面有mold,房子地面有点倾斜,屋顶不平,有点呈波浪状。
我想问一下要修这些,是不是很贵啊?每一项大概多少钱啊?
非常感谢!因为我不是屋主,所以大多数公司没有免费估价。
A*******t
发帖数: 319
15
Crawl space要弄的话,一般需要在里头沿着perimeter的墙挖一条2尺深的French
trench埋上排水管,然后看crawl space面积决定要一个还是两个sump pump,有的会加
mechanical ventilation或者就把crawl space封起来,加抽湿机。整个下来找正规公
司做基本上一万左右,好处就是终生保修。Crawl space可以找专门做waterproofing的
公司来做inspection看看什么问题,都是免费的,多咨询几家。
地面倾斜可能是房子本身结构不好或者哪里的负荷超载了,或者房子的横梁在设计和施
工的时候没有严格按照规范要求做,也可能是地基下陷,但是如果是老房子,一般下陷
也好结构弯曲也好都应该已经定形了,对安全没什么威胁。你如果不放心,可以找
structure engineer来做structural inspection。如果是房子结构问题的话,可以加
support beam或者柱子,我知道的每个柱子大概2000。
mold的问题不清楚,没遇到过。
m**********7
发帖数: 2191
16
【 以下文字转载自 Travel 讨论区 】
发信人: mildseven007 (麻药塞翁洞洞拐), 信区: Travel
标 题: 肯尼迪航天中心(Kennedy Space Center)
发信站: BBS 未名空间站 (Wed Nov 18 14:23:53 2015, 美东)
准备从Canaveral 去cruise,想顺便去下附近的Kennedy Space Center,带2娃(11
岁,8岁)。cruise是 noon-4pm登船时间。
我想问一下上午9点去参观 space center,到中午时分结束是不是差不多够了,这样可
以从容的赶上cruise的登船?
貌似space center有bus tour,2小时,这个应该是必参加的吧?
先谢谢了!
m***m
发帖数: 3173
17
crawl space积水一定要弄清楚是什么原因
只是放水泵积水 属于治标不治本 可能隐藏了其他非常重大的问题
我现在正在盖的这个房子 也是盖到一半的时候crawl space开始出现积水
开始以为是地基有裂缝 —— 这个非常严重 可能影响到这个房子的安全性 而对于
builder我来说 意味着可能要地基重做 全部重盖
后来所幸发现不是 是因为二楼有一个阳台没有做好 有结构问题 导致水可以顺着外墙
一路进入crawl space 那堵墙长期以往最后也会被毁掉
最好阳台拆掉 那面墙全部重做 crawl space的积水也解决了
所以也像楼上几位提到的那样 我就是想跟你说 一般这种积水只是一个表象 往往有更
深层的原因 (一般是结构方面的 有的是开始就没有修好 有的是之后老化)
所以你一定要弄清楚根本原因
e****t
发帖数: 304
18
从干旱地带搬来的,对这个Crawl space 实在没概念。
房龄二十多年, 在Bellevue 算比较新的了,inspection 发现crawl space 有几处水
,每处大概一两杯水倒在地上那么多。 inspector 说水是从一个墙上进水管的地方没
密封好进来的,和从几个footing 处进来的。除此之外crawl space 其他状况还好。地
势在小区不算高也不算低,房子lot 比较平,一侧往上有个小坡,另一侧比较平略低于
这个房子。
这种问题如果想做进一步的检查,应该找什么样的人?
想知道类似这样的问题,在本地有多普遍?要是旧房子一半以上都可能这样或其他更严
重的问题,就让seller 修好算了,要求旧房子想新房子那样完美也不现实。 要是绝大
多数crawl space 在任何情况下都是干的 而且buyer 一般很介意这个,那我就考虑退
出了,因为将来卖房子也是问题。 seller 现在的口气是你不要还有别人等着要呢。我
现在考虑是要是通过密封和地面雨水引流能解决那就还好,要是要装个pump 才行我就
想算了? 本地同学给指点下吧!
b********o
发帖数: 1157
19
来自主题: Exchange版 - Tickets to Kennedy Space Center (转载)
【 以下文字转载自 Travel 讨论区 】
发信人: bujingniao (bubu), 信区: Travel
标 题: Tickets to Kennedy Space Center
发信站: BBS 未名空间站 (Mon Dec 31 21:09:29 2012, 美东)
I have five tickets to Kennedy Space Center in Florida for sale. Valid until
08/23/2013. Kennedy Space center is the only launch site for space shuttles
and it is only a 40 min drive from Orlando. It is on the Atlantic beach.
Original price $52 each. Willing to sell it for $35.
h*k
发帖数: 520
20
来自主题: Rock版 - Lost In Space
【 以下文字转载自 Music 讨论区 】
发信人: hbk (H怪蜀黍(;′Д`)ハァハァ), 信区: Music
标 题: Lost In Space
发信站: BBS 未名空间站 (Mon Dec 3 03:13:57 2007), 转信
轉自HBK的space
http://hbkguo.spaces.live.com
12/3/2007
Lost In Space
這段時間一直忙于期末的東西,身心都很疲憊,人也頗為浮躁,做什么事情總是靜不下
心來。昨晚(準確的說應該是今天臨晨)的時候為了寫一個final paper,硬著頭皮去讀
五篇文章看得我頭昏眼花。不過本文的重點并不是我想像一個失去丈夫的怨婦一樣抱怨
,而是就是在這浮躁的氛圍中,我發現我似乎忘卻了什么東西。
很久沒有過被音樂打動的感覺,但是就是在昨晚我看文章看的冒火的時候卻被我正在聽
的一首歌打動了。很巧合的是(也許不是巧合也說不定)打動我的正是我剛剛接觸金屬
時曾經打動我的Avantasia樂隊的新歌。關于Avantasia,實在有太多的回憶在里面了,
他們當時的那兩張The Metal Opera I & II專
t*******o
发帖数: 1124
21
To remove a space, click the Delete button (x) on the space’s thumbnail.
但是我试了一下,只有desktop的space上面才有X可以点。
full screen app的space如何快捷的删除掉?
s**e
发帖数: 1834
22
来自主题: Hardware版 - How to increase my local disk (C:) space
My computer was partitioned when bought a few years ago, and only allocated
10G to the C: drive. Now the problem is, it only have about 200m free space
on C: drive, so I got "C: drive is running out of space" message on a daily
basis. I tried to clean up the disk, and already moved almost all my
personal files to another drive (D:), and also tried to install other
software on D: drive as much as possible.
But C: drive is still running out of space, and the remaining space is
chipped away everyda
b********d
发帖数: 2
23
很奇怪,我的电脑上live spaces时无法看到图片了。google了一下,把能找到的方法
都用了一遍。删除cache,关闭防火墙,让IE打开网页时自动刷新,该试的都试了,还
是无法显示。我公司的电脑上space的时候照片还是能正常显示的。看来问题出在我电
脑的设置上。我是IE7,防火墙是Zone Alarm,杀毒软件是诺顿企业版。
另外我电脑在登陆那些不需要登陆验证(对公众开放共享的space)的space的时候,还
是能看到图片的。这可能说明问题出在登陆验证上面。反正我自己已经是无法可施了,
大家有遇到过这种情况的帮忙给个建议吧。Thanks!
T*******n
发帖数: 493
24
来自主题: TeX版 - eqnarray 后面的space 的问题
The subscript under the second \sum makes you think that
there is extra space, but if you measure it, there isn't (unless
you have loaded other packages that modify the spacing).
If you insist on adjusting the spacing but only for this
equation, try the following. I also recommend the amsmath
package's split environment instead of eqnarray, which has
known bugs in how spacing is calculated.
\documentclass{article}
\usepackage[tbtags]{amsmath}
\begin{document}
Text text text text text text text
i*******w
发帖数: 405
25
按我们学校的Dissertation template,结果出来的 footnote 是 double space, 我检
查半天那个.sty file,也没看出来哪里有问题。大侠们哪位知道怎么把 footnote 的
double space 改成 single space? dissertation 马上要交了,急问一下。多谢了。
Bow!
i*******r
发帖数: 1064
26
来自主题: TeX版 - 求助 - toc spacing
这是我用的 style file 中的 \listoftables 的定义
%----------
\def\listoftables{%%%
\newpage\pagestyle{plain}\pagenumbering{roman}
\setcounter{page}{\value{@ldpage}}
\doublesp@cing
\@restonecolfalse\if@twocolumn\@restonecoltrue\onecolumn\fi
\vspace*{53pt}\centerline{\Large\bf\listtablename}
\addcontentsline{toc}{chapter}{\listtablename}
\vskip 46pt
\@starttoc{lot}
\if@restonecol\twocolumn\fi
\newpage\setcounter{@ldpage}{\value{page}}
\addtocontents{lof}{\setst... 阅读全帖
y******p
发帖数: 336
27
来自主题: AnthroLing版 - One space or two space between sentences
in china, i use One space space between sentences, but in us, the advisor
ask me to use two space between sentences. which one is correct?
thanks
d*****u
发帖数: 62
28
来自主题: AnthroLing版 - One space or two space between sentences
Do you mean "line spacing"? Double spacing is easier on the eye so that
people like that format better. You should do as required. If your teacher
says he likes double spacing, then follow it.
s*****t
发帖数: 1994
29
来自主题: Astronomy版 - Astronomy Picture of Day: Fly Free in Space
To Fly Free in Space
Credit: STS 41-B Crew, NASA
Explanation: What would it be like to fly free over the seas and clouds of Earth? The first to
experience such an "untethered space walk" were NASA astronauts Bruce McCandless and
Robert Stewart during Space Shuttle mission 41-B in 1984. McCandless, pictured above,
used a Manned Maneuvering Unit (MMU) to move in and around the cargo bay of the space
shuttle. The MMU works by shooting jets of nitrogen and has since been used to
j*c
发帖数: 97
30
来自主题: Astronomy版 - CHIPS--satellite to study space in space
Keith Koehler
Wallops Flight Facility, Va. October 17, 2002
K***************[email protected]
Phone: 757-824-1579
RELEASE: 02-149
SATELLITE TO STUDY THE SPACE IN SPACE NEARS LAUNCH
A satellite that will examine the "empty" space between stars
has reached a milestone towards a December launch with its
arrival this week at the Vandenberg Air Force Base, Calif.,
for integration with the launch vehicle.
The Cosmic Hot Interstellar Plasma Spectrometer (CHIPS)
satellite, the first in NASA's Unive
B*M
发帖数: 1340
31
没有特别的定义,就是H是一Banach space
L是一probability space,
然后问题是:
1. is it possible that L = H??
2. L must be a Banach space??
a***g
发帖数: 2761
32
来自主题: Mathematics版 - 有没有这样一个banach space
Actually,Let X be a non empty set and Y be a real Banach space; then the
real normed space of bounded functions from X into Y is a real Banach space.
I also consider of L_\infty(R). But I'm not sure it's a Banach space. I don'
t know how to proof the completeness of it, since the whole real line cann't
fit a finite measure in common case.
n********m
发帖数: 37
33
Just get an email about the Free Dropbox Space 3G-25G promotion that will be
very useful for who is preparing USMLE:
1. if you don't have a dropbox account:
(a) register a dropbox account using:
http://db.tt/tb6KQN8
(b) download and install the dropbox software after your registration ( you
will have free 2.5 G at this step)
(c) go to the { Space Race) tab on your left hand
(d) put your university email address in the { verify your school email
address }
(e) check your universi... 阅读全帖
n********m
发帖数: 37
34
these schools already had free 25G, so definitely join the space race this
week if you are in those school :
United States Leaderboard
Space Race is a chance for your school to win eternal glory and free space!
Here are the top schools in the nation.
SCHOOL NUMBER OF SPACE RACERS TOTAL POINTS
1 University of California Berkeley 11,703 26,736 points
2 Massachusetts Institute of Technology 10,718 23,046 points
3 University of California Los Angeles ... 阅读全帖
n********m
发帖数: 37
35
these schools already had free 25G, so definitely join the space race
thisweek if you are in those school :
United States Leaderboard
Space Race is a chance for your school to win eternal glory and free space!
Here are the top schools in the nation.
SCHOOL NUMBER OF SPACE RACERS TOTAL POINTS
1 University of California Berkeley 11,703 26,736 points
2 Massachusetts Institute of Technology 10,718 23,046 points
3 University of California Los Angeles ... 阅读全帖
w*******y
发帖数: 60932
36
It is just for fun and just trying to send a piece of information of into
space and I think it is cool.
You can send you picture into space with NASA space shuttle.
These are the links
Link:
http://faceinspace.nasa.gov/
and
Link:
http://www.planetary.org/special/fromearth/sail
and
Link:
http://marsparticipate.jpl.nasa.gov/msl/participate/sendyourname/
They will give you a certificate with your name and you can print it out and
show it to your friends or put a frame in your house.
This is the sou
w*******y
发帖数: 60932
w*******y
发帖数: 60932
38
Shuttle STS-133 Launches tomorrow (2/24) and Shuttle STS-134 launches 4/19.
Link:
https://faceinspace.nasa.gov/index.aspx
Details
NASA wants to put a picture of you on one of the two remaining space shuttle
missions and launch it into orbit. To launch your face into space and
become a part of history, just follow these steps:
First...Select the Participate button at the bottom of this page and upload
your image/name, which will be flown aboard the space shuttle. Don't have a
picture to upload? N... 阅读全帖
w*******y
发帖数: 60932
39
Direct2drive has a few games on sale today all PC of course.
Red Faction Armageddon:
http://www.direct2drive.com/2/10051/product/Buy-Red-Faction:-Ar
$32.25 (I think this is Steamworks)
Assassins Creed Brotherhood:
http://www.direct2drive.com/2/10024/product/Buy-Assassin's-
#39;s-Creed:-Brotherhood-Download" rel="nofollow" target="_blank" onclick="_
gaq.push(['_trackEvent', 'thread', 'click', '3198526 - red-faction-
armageddon-32-assassins-creed-brother-hood-16-dead-space-2-12-nfs-shift-2-15
-p... 阅读全帖
w*******y
发帖数: 60932
40
EA Store
Facebook Link
How would you caption this photo? If we get 500 likes/captions by 5 PM PT
well unlock 50% off Dead Space & Dead Space 2 + free shipping (US only) at
that time.
Dead Space 2PC:
http://store.origin.com/DRHM/store?Action=DisplayProductDetails
$10
PC:
http://store.origin.com/DRHM/store?Action=DisplayProductDetails
$15
Xbox 360:
http://store.origin.com/DRHM/store?Action=DisplayProductDetails
$15
Dead SpacePC:
http://store.origin.com/DRHM/store?Action=DisplayProductDetails
$10
P... 阅读全帖
w*******y
发帖数: 60932
41
Currently i use Sugarsync to back up my very important data, it gives you
5gb of free uploading space, with no limit as to how big a file can be... If
you do some other things you can get free space as well. It works well if
you want to store some files on your computer (word documents, etc..) and
then want to access them from you phone... It's pretty nice.. i have
included the links below.
www.sugarsync.com:
http://www.sugarsync.com
.
Here are the links to have them on your computer.
Windows Re... 阅读全帖
w*******y
发帖数: 60932
42
Figured I may as well make my own thread for the legit way to get an
additional 3GB of Dropbox space that is not time limited.
Just use the Camera Upload and get 3GB of space for uploading 2.5GB worth of
pictures. I did this about a month ago when it was in beta and got an
additional 5GB of space on my account. The additional space does not have a
time limit on it either.
Link:
https://www.dropbox.com/help/287
w***o
发帖数: 3830
43
【 以下文字转载自 Joke 讨论区 】
发信人: bittergourd (苦瓜), 信区: Joke
标 题: 32% off Space Shuttles at NASA ($28,800,000) (转载)
发信站: BBS 未名空间站 (Sat Jan 16 12:19:49 2010, 美东)
发信人: bittergourd (苦瓜), 信区: shopping
标 题: 32% off Space Shuttles at NASA ($28,800,000)
发信站: BBS 未名空间站 (Sat Jan 16 12:19:26 2010, 美东)
http://dealnews.com/32-off-Space-Shuttles-at-NASA-Deals-from-28-800-000-free-shipping-more/342463.html
NASA has discounted the price of its soon-to-be-retired space shuttles to $28,800,000 each. With transportati
s*****t
发帖数: 1994
44
来自主题: _Astronomy版 - Astronomy Picture of Day: Fly Free in Space
To Fly Free in Space
Credit: STS 41-B Crew, NASA
Explanation: What would it be like to fly free over the seas and clouds of Earth? The first to
experience such an "untethered space walk" were NASA astronauts Bruce McCandless and
Robert Stewart during Space Shuttle mission 41-B in 1984. McCandless, pictured above,
used a Manned Maneuvering Unit (MMU) to move in and around the cargo bay of the space
shuttle. The MMU works by shooting jets of nitrogen and has since been used to
j*c
发帖数: 97
45
来自主题: _Astronomy版 - CHIPS--satellite to study space in space
Keith Koehler
Wallops Flight Facility, Va. October 17, 2002
K***************[email protected]
Phone: 757-824-1579
RELEASE: 02-149
SATELLITE TO STUDY THE SPACE IN SPACE NEARS LAUNCH
A satellite that will examine the "empty" space between stars
has reached a milestone towards a December launch with its
arrival this week at the Vandenberg Air Force Base, Calif.,
for integration with the launch vehicle.
The Cosmic Hot Interstellar Plasma Spectrometer (CHIPS)
satellite, the first in NASA's Unive
Z**R
发帖数: 1233
46
这篇太过了,底下的comments没有一个人同意这傻逼记者的:
It may be true that economically, manned space flight struggles to deliver
the returns that a project accountant (or an Economist correspondent) has
been trained to look for, or which Newt Gingrich supposes may be available
by say shipping moon rocks back to earth to be used in cement.
Nevertheless, as other readers have noted, only manned space flight is
important ultimately. Would this Economist correspondent prefer to watch
Animal documentaries than go on safar... 阅读全帖
i***a
发帖数: 4718
47
来自主题: Military版 - China basing on CNN about space debris
cnn 就是个花边小报,一堆无良娱记. 被Daily Show John Stewart经常拿来开涮的.
俄国的官媒ITAR-TASS,和其它媒体根本没报道. 现在真正有新闻价值的是CHAVEZ.
http://www.itar-tass.com/en/
Russian Today 有一篇报道,比CNN要详尽的多.
http://rt.com/news/russian-satellite-collide-chinese-044/
"While the BLITS satellite weighs 7.5kg, the weight of the piece that struck
it may only be around .08 grams. BLITS is a retroreflector demonstration
satellite built for precision satellite laser-ranging experiments. It was
launched in 2009 and expected to last five years in space.
... 阅读全帖

发帖数: 1
48
【 以下文字转载自 Movie 讨论区 】
发信人: aixiaoke (四处游荡的艾小柯), 信区: Movie
标 题: 俺来说说Space Odyssey 2001为什么是我心目中排名第一的电影吧
发信站: BBS 未名空间站 (Wed Feb 28 19:30:24 2007)
前一阵大家说这部电影不好,本来嘛,这好与不好都是因人而异的。不过我的一贯观念
是,如果同样花钱看同一部电影,别人比自己感动得深,享受得多,那我不得不说,他
/她真是赚到了!所以我知道即使有n多人不屑,也还是想说说自己为什么觉得这部“闷
片”是我心目中毫无疑问排名第一的电影,因为说不定,也有人想跟我一样,通过别人
的经验也“赚”一把。
我这人比较啰嗦,要说这个话题,得先从写字儿说起。
我开始照着Sol Stein的书学习写小说的时候,牛人说了,写作最难的在于要show the
story,而不是tell the story,也就是说,要让文字产生画面感,那是要下真功夫的
。我想大家小时候上语文课可能都读过老舍那篇写夏天热的,我印象最深的就是,老师
说老舍牛啊,厉害啊,为什么?因为写了半天热,愣没一个热字... 阅读全帖

发帖数: 1
49
这个一箭多少星,不是什么先进技术。这一点,并不是很难。上一次,阿三都一箭108
星。阿三把自己吹成了世界第一。实际上阿三的航天和卫星水平,只能够算得上第二阵
营的。
因为这些卫星都是极小的重量,都是按公斤算的。这一次Space X 展示的一箭60星。基
本上也是这个套路,毫无新意。但是,Space X展示这个能力,主要是想要完成它的星
链计划。
所谓的星链计划,就是SpaceX准备在天空中搞出1.2万个小卫星,用于全球的通讯。
但是,BBC警告说,近地轨道上面本来就非常多的卫星。Space X还搞这么多小卫星,很
有可能在太空形成灾难。可能会造成大量的卫星相撞事故。
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