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宇宙正走向死亡吗 – 译学馆
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宇宙正走向死亡吗

Is the Universe Dying?

时间是永恒的吗?
Is time eternal?
是否存在宇宙的起源?
Was there a beginning?
宇宙将会终结吗?
Will there be an end?
我们永远都不会知道
We’ll never really know.
但是对于我们能看到和测量的那部分宇宙
But for the part of the universe we can see and measure,
答案变得一目了然
the answers are becoming starkly clear.
宇宙充满了时钟
The universe is filled with clocks,
而宇宙时钟的最小流逝单位是
cosmic timepieces that are ticking down the tiniest moments,
宇宙的重要时刻 历元
the epochs, the grand eras of creation.
它们是恒星 从比一些行星大不了多少的
They are the stars… from tiny cool dwarfs not much larger
超低温矮星
than some planets… all the
一直到体积比太阳大数百倍的热巨星
way up to hot giants hundreds of times the size of our sun.
我们现在生活在所谓的恒星时代
We now live in what’s known as the stellarera.
宇宙中大部分的能源
Most of the energy given off in our universe
来自于恒星的诞生 发亮 和死亡
comes from stars in the process of being born… of shining… and dying.
当最后一批恒星最终灭绝
When the last populations of stars eventually die
这宏大的光明时代将消退到
out… this grand luminous era will fade
无穷无尽的深处
into the recesses of infinity.
但是有多快呢?
But how quickly?
一个大型国际合作组织
A large international collaboration,
星系和质量巡天项目现在已经证明
the Galaxy and Mass Assembly project, has now documented
恒星消失的过程正在进行
this process in action.
通过用世界上和太空中的望远镜来观察
Working with telescopes around the world and in space,
他们调查了天空中的大片区域
they surveyed large regions of the sky,
从紫外线到远红外波段 总共有20万个星系
200,000 galaxies in all, in wavelengths from ultraviolet to far infrared.
目的是测量星系的能量输出
The object was to measure the energy output
来找到整体恒星
of galaxies… to find out how overall rates
的出生和死亡速率随时间发生的变化
star birth and death have changed over time.
他们推断
They concluded that galaxies
总的来说星系释放的能量是
in the aggregate are emitting half the energy they did two
20亿年前的一半
billion years ago.
恒星时代仍将持续上万亿年
The stellar age is still expected to last for trillions of years more.
事实上 宇宙中的每一样东西都一个定时器
The fact is, everything in our universe has a timer…
从最宏伟的星系团
from the grandest galaxy clusters…
下到银河 太阳 地球
down to our Milky Way… our Sun… our Earth….
甚至是曾经组成恒星的原子
even the atoms that once were assembled in stars.
众所周知 宇宙的确在走向死亡
The universe as we know it is indeed dying,
而我们只是无限深度时间里
and we are but a blip in the incomprehensible
的一个小插曲
sweep of deep time.

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解释宇宙走向死亡的过程

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收集自网络

翻译译者

杜小雅

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审核员 EY

视频来源

https://www.youtube.com/watch?v=5h1Dlgt8cb4

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