有丝分裂——宇宙胚胎发育模拟图（Big Bang ）

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来源：中国新闻网 发布时间：2011-8-2   ; z9 a& m# k5 Z0 Z! k$ H

! Q: X8 B4 }2 t& Q* `科学家使用微粒碰撞重现宇宙大爆炸壮观景象 - X0 k0 g. b9 T6 v" @

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欧洲核子研究会的科学家们运用大型强子对撞机，拍摄出了最接近宇宙大爆炸的图片' J' p8 J5 c1 J! X! E1 j1 e# J
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这一系列图片看起来仿佛夜空绽放的烟火，不过这样的爆炸快照可能是我们能看到的最接近宇宙起源的景象。据外媒8月1日报道，欧洲核子研究会的科学家们运用大型强子对撞机，拍摄出了最接近宇宙大爆炸的图片。
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为了探索宇宙起源的奥秘，科学家们再现了亚原子爆炸，这种爆炸很像袖珍型的宇宙大爆炸。科学家们将原子大小的微粒以光速投入进16米长的加速器里，微粒在零下271摄氏度的真空中碰撞爆炸，展现了这一壮观的景象。4 k0 r1 X! ]$ H$ X% t+ D- s' N

- m4 f, M1 o0 y% c! D- A欧洲核子研究会的发言人萨顿解释了这个实验：“我们可以通过这些留下的轨迹来推测微粒的活动过程，微粒并不可见，但是活动的痕迹却留下了。物理学家将这些痕迹用不同的颜色标出来，比如蓝色代表高能，红色略低一些。”
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9 M3 \% V% [# ?! q“试验中的亚原子微粒是宇宙起源中的常见物质，通过对这些物质的研究我们希望有一天能够彻底揭开宇宙起源之谜。”萨顿说。& n4 Q5 b& ~# _- ]

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The Big Bang in pictures: Scientists produce computer images of particle explosions similar to the greatest ever galactic light show
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8 |- D5 e3 `4 I, w% X( u. _% pBy Daily Mail Reporter
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" s3 P/ E5 F1 P1 {6 [7 X* h5 vLast updated at 1:23 PM on 1st August 2011+ |# |4 |) ^$ Z1 |! R/ e

4 D$ u- |% v' z0 E% cComments (46) Add to My Stories Share It may look like a firework display in the night sky but these explosive images could be the closest we have yet come to snapshot from the birth of the universe itself. . `  |2 |# p7 O8 H7 G" _& }) q9 {
The computer generated images are the result of the 'big bang' experiments performed by scientists at CERN, home of the Large Hadron Collider, in Geneva, Switzerland.
+ [& O+ t! Q) B1 c/ EIn trying to determine exactly how the universe came into existence, scientists have been recreating sub-atomic explosions - like the one that may have happened around the time of the big bang - using atom-sized particles of lead.. I+ K& s- `. D  V) t0 P4 K
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Explosions in the sky: These images track the movement of particles during experiments at CERN, and could give some idea of how the Big Bang may have looked% d* R) E$ w1 {2 Q  O/ V

: \, G8 B. N- U4 Q1 S% P0 A  i0 B! u Eye-popping: When particles collide at the speed of light n a vacuum colder than -271 Celsius, they put on a spectacular show of light, heat and movement that form complex and often intricate patterns# T2 {& N" a* F4 f

; i! M4 m  _* F- vThey shoot the particles through a 16-mile long accelerator at the speed of light and when the particles collide in a vacuum colder than -271 Celsius, they put on a spectacular show.
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More...The end of evolution? Scientists say human brain may have reached full capacity
- m4 s  d6 F; b9 H$ F9 vNow even ET is making crop circles (with a little help from GPS and MICROWAVES) ) S- O3 N# e8 T: O

! V; I9 h: {" H: T& {# ^! z& |8 z0 BYorkshire-born particle physicist and CERN spokesperson Christine Sutton said: 'When two lead-ions collide basic particles like pions - one of the basic particles that make up atoms - are expelled.
/ C) a% o" D/ W* U( Z4 `'Sub-atomic particles such as these include the basic building blocks of atoms and are common in the universe.$ {8 w5 O. {, z! \
'So by studying these we can learn more about what the universe is made from and perhaps one day how it all began.
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On the move: The lines' directions represent the movement of particles after the collisions and the colour is their intensity - with yellow low and red high, as with flames
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) U4 r' A+ M# C7 \7 m, [  In layman's terms: Scientists compared the coloured lines to the tracks of an animal, or the trail  of an aeroplane, through which they track the movement of the particles
/ u$ k2 c* l9 U) v% |8 H'We measure what we call tracks - which we look at like animal tracks to trace the presence and movement of particles.+ L( W5 d9 y- K9 Z6 X
'You can't see the particles themselves but these trails are left behind - like the contrails of an aeroplane.  
! z  J/ r: x8 u0 M; q8 Q( |'The traces are coloured in by physicists to represent energy, for example.
; I5 r  w" P# Y$ |'Blue can represent higher energies, red lower ones, like the colours in flames.' ) z3 H5 g( z+ {# z8 t
CERN is built to handle unimaginable forces. When scientists use the 9,300 magnets to blast two super-speeding lead ions together the heat generated is 100,000 times hotter than the sun. . j$ ^6 |. d0 @+ F( y
But for the magnets to work helium superfluid is used to keep the accelerator ring chilled to -271 Celsius.$ Q* P/ U! `) W) q3 u  X

8 q  g7 P& c4 d5 e( x% ^( K: p: yExplosive power: CERN is built to handle unimaginable forces and can generate heat 100,000 times stronger than the sun$ ]3 O, f9 P. E- a8 {; |6 F
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7 z# j+ [$ q6 _$ s/ F* eRead more: http://www.dailymail.co.uk/scien ... .html#ixzz1TsJ2SJLC