字幕列表 影片播放
The universe,
宇宙
rather beautiful, isn't it?
很漂亮,不是嗎?
It's quite literally got everything,
基本上它包含所有東西
from the very big
從很大
to the very small.
到很小都有
Sure, there are some less than savory elements in there,
當然,也包含一些討厭的東西
but on the whole, scholars agree that its existence
但整體而言,科學家仍同意
is probably a good thing.
宇宙的存在大概是件好事
Such a good thing, that an entire field
有整個科學領域的人
of scientific endeavor is devoted to its study.
都投注在宇宙的研究上
This is known as cosmology.
這被稱作宇宙學
Cosmologists look at what's out there in space
宇宙學家像太空探索
and piece together the tale of how our universe evolved:
並拼湊宇宙演進的過程
what it's doing now,
它現在的狀態
what it's going to be doing,
它未來又會如何
and how it all began in the first place.
還有它最初如何形成
It was Edwin Hubble who first noticed
愛德文.哈勃(Edwin Hubble)是第一個注意到
that our universe is expanding
其他星系正在
by noting that galaxies seem to be flying
越離越遠
further and further apart.
而我們宇宙正在擴張的人
This implied that everything should have started
這暗示宇宙中的所有東西
with the monumental explosion
都源於一個
of an infinitely hot,
從極端熱、極端微小的一點產生的
infinitely small point.
強烈爆炸
This idea was jokingly referred to at the time
這個概念在過去被戲稱為
as the "Big Bang,"
「宇宙大爆炸」
but as the evidence piled up,
但支持的證據逐漸累積
the notion
其概念
and the name
和名字
actually stuck.
逐漸為人所接受
We know that after the Big Bang,
我們知道在大爆炸過後
the universe cooled down
宇宙冷卻
to form the stars and galaxies that we see today.
並行成我們現今所見的星體和星系
Cosmologist have plenty of ideas
宇宙學家對於這個過程
about how this happened.
有許多想法
But we can also probe the origins of the universe
但我們也可以在實驗室中重現
by recreating the hot, dense conditions that existed
宇宙最初生成時
at the beginning of time in the laboratory.
高溫、稠密的條件
This is done by particle physicists.
這就是粒子物理學家所做的事
Over the past century,
在過去的一世紀中
particle physicists have been studying
粒子物理學家研究了
matter and forces at higher and higher energies.
更高能量型態的物質和力
Firstly with cosmic rays,
首先是藉由宇宙射線
and then with particle accelerators,
接著借助粒子加速器
machines that smash together
這是能將讓次原子的粒子
subatomic particles at great energies.
在高能狀態下碰撞的機器
The greater the energy of accelerator,
愈是能提供越高能量的加速器
the further back in time they can effectively peek.
愈可讓科學家窺探 接近大霹靂的狀態
Today, things are largely made up of atoms,
現在大部份的物質都由原子組成
but a hundreds of seconds after the Big Bang,
但在大霹靂結束後數百秒內
it was too hot for electrons to join
高熱使電子無法接近原子核
atomic nuclei to make atoms.
以形成原子
Instead, the universe consisted of
這時宇宙是由次原子物質
a swirling sea of subatomic matter.
所組成的渾沌海洋
A few seconds after the Big Bang,
大霹靂後的數秒之後
it was hotter still,
依然炙熱
hot enough to overpower the forces
熱到可以克服
that usually hold protons and neutrons together
將質子和中子
in atomic nuclei.
侷限在原子核內的力量
Further back, microseconds after the Big Bang,
再往前推,大霹靂的數微秒之後
and the protons and neutrons were only just beginning
中子和質子正在由
to form from quarks,
夸克組合而成
one of the fundamental building blocks
夸克是粒子物理學中
of the standard model of particle physics.
組成物質的基礎
Further back still,
再更往前推
and the energy was too great even
能量高過
for the quarks to stick together.
讓夸克連結在一起的能量
Physicists hope that by going to even greater energies,
物理學家希望藉由提供更高能量
they can see back to a time
我們能回到
when all the forces were one in the same,
這所有作用力都相等的時候
which would make understanding
以讓我們更容易地
the origins of the universe a lot easier.
瞭解宇宙的形成
To do that, they'll not only need to build bigger colliders,
所以他們需要建造更大的加速器
but also work hard to combine our knowledge
並將我們對所有事物
of the very, very big
包含很大
with the very, very small
和很小的東西
and share these fascinating insights
並將這些有趣的知識
with each other and with,
分享給更多人
well, you.
包含你
And that's how it should be!
事情就是如此
Because, after all,
因為畢竟
when it comes to our universe,
當我們說到宇宙時
we're all in this one together.
我們都在同一條船上