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地球会被小行星击中么? – 译学馆
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地球会被小行星击中么?

Will We Ever Be Hit By an Asteroid?

本视频由Real Life Lore制作
This is a video by Real Life lore
由Seriously Digital Entertainment
Sponsored by seriously digital entertainment
和他们的手机游戏Best Fiends赞助
and their mobile game, Best Fiends
视频开始前 先做个简要介绍
Beiefly before the main portion of the video begins
大概45秒
In about 45 seconds,
我要感谢我的非凡的赞助者
I’d like to thank my incredible
他们的游戏是关于一颗陨石
sponsor. Their game is about a meteorite
撞击了一个虚拟星球
that crashes into a fictional planet
之后 变成了
that apparently transforms it into a
自由解密冒险游戏 你可以
free puzzle adventure game where you can
收集和升级小角色
collect and upgrade little characters by
匹配同色物品
matching the same colored objects to
喂养虚拟的鼻涕虫 在现实世界
just feed virtual slugs, in the real world
陨石撞击只会带来
meteorite impacts often caused nothing
毁灭性摧毁和混乱
but mass destruction and chaos with
也或许使一些物种灭绝 但在
maybe a few extinction events. But in
这个虚拟世界 它其实是
this virtual world it’s actually created
一款相当有趣的游戏
a pretty fun game with some character
通过寻找角色 你可以赢得
quest where you can win virtual
类似金子一样的虚拟货币 并且不会灭绝
prices like gold and hopefully not going extinct there’s quests every 50
达到50级 你可以
levels and you can play competitively
与还没有灭绝的好友PK
against your also not extinct friends
你可以在脸书上 查看他们排行榜排名
on Facebook through their leaderboards
我现在32级 如果你
I’m on there at level 32 so if you’re the
想要追求卓越
type of person that has to be better
通过点击下面的链接
then you can download the game for free
免费下载这款游戏
with the link in the description and if
你玩到第10级 他们会
you actually play it to level 10 they will
发放一些免费的虚拟金子和钻石
throw some free virtual gold and diamonds
在闯关的过程中 似乎相当于
your way that’s apparently were four
4美元99分 如果你
dollars and ninety-nine cents if you
将视频跳到现在 你可能
skip the video until now that you should
会感觉有点糟糕
feel just a tiny bit bad about yourself
但现在视频的重点部分开始了
but the main portion of the video begins
有一个
now anyway regardless so here’s an
有趣的问题
interesting question how many times has
地球被小行星撞击过多少次
the earth been struck by an asteroid
观察月亮和其他行星 比如
when you look at the moon or planet like
水星 能立即看到
mercury you can tell right away that
它们被撞击过太多次 因为
they’ve been impacted a lot because you
你可以肉眼数出许许多多的陨石坑
can physically count hundreds of craters
在星球表面上 但这不是
on the surface but this isn’t really the
地球的状况 保存完好的陨石坑
case with earth perfectly preserved impact
很少 要不然就是被
craters are rare or blended extremely
自然环境融合的很好
well with the environment here and it’s
不是因为 地球被撞击
not because the earth has been impacted
的次数少 是因为地球
any less it’s because earth has
能够通过发生地质构造活动进行侵蚀
processes like erosion and tectonic
月球和水星并不具备这种活动
activity that the moon and mercury don’t
地球被陨石撞击
the earth has likely been hit by
与月球或水星在过去遭受撞击次数差不多
asteroids just as many times as the moon
但多少次
or mercury in the past but how many
是人类见证
times have humans actually witnessed an
陨石撞击的发生
event like this happening to start with
目前为止地球已经被撞击过
the earth is likely already been hit
很多次 或者
several times today and maybe getting
就在你观看视频的同时正在遭受撞击
hit right now while you’re watching this
一些陨石碎片撞击
video by extremely small pieces of rocks
被称之为流星 大小不一
called meteoroids which can range in
小到一粒沙 大到
size from a grain of sand up to a one
一米宽约重1万5千吨的陨石
meter wide object about 15,000 tons of
闯入地球
objects of this size enter the Earth’s
大气层 每年都有 但大部分
atmosphere every year and while most of
到不了地球表面
these don’t reach the surface, the few
那些到达地球表面的就是陨石
that do are called meteorites like this
例如 一颗陨石撞击某户人家的房子
one that hit somebody’s house in the San
位于旧金山湾 发生在2012年
Francisco Bay Area back in 2012 or this
另外一颗砸毁了某人的汽车
one that smashed through somebody’s car
在伊利诺伊 1938年 但越大的
in illinois in 1938 but the larger
陨石造成更大的损害
asteroid is the larger the damage that
一颗直径
is caused by it asteroid with a diameter
4米 或者
of four meters or about the size of an
一头大象的大小
elephant, hit the earth about once every
平均每年撞击地球一次
year on average while objects about
7米宽的物体撞击地球
seven meters wide which can cause an
堪比
explosion similar scale to the atomic
在广岛爆炸的原子弹
bomb dropped on Hiroshima hit our planet
每5年就会发生一次
about every five years or so an event
广岛原子弹爆炸
the same scale of Hiroshima happening
每隔几年发生一次
every few years may seem like it would
似乎耸人听闻 但这些陨石
be spectacularly obvious but they
撞击通常不被注意 因为
generally go unnoticed because the
地球表面大部分
majority of the earth’s surface is
被水覆盖
covered in water a majority of the
大陆陆块的大部分都荒无人烟
Earth’s landmasses is still sparsely
很多陨石
populated and many of these objects
在高层大气层已经爆炸了
simply explode in the upper atmosphere
每年发生的一些陨石撞击事件
several impact events occur every year
人类不曾亲眼看到
without ever being witnessed by humans
例如 1975年到1992年
between 1975 and 1992 for example
美国的
American missile early-warning
导弹预警卫星探测到136次爆炸
satellites detected 136 major explosions
发生在高层大气层中
in the upper atmosphere caused by
由中等的空气爆炸流星造成
moderately sized air bursting meteors
这张地图显示 1994年到2013年
this map here shows you the frequency of
1到20米宽大小的空气爆炸流星
air bursting meteors between one and twenty
发生频率
meters in size between 1994 and 2013
能发现 这种活动非常频繁
which you can see are fairly common
那真正可怕的
events but what about the really scary
能摧毁整座城市
asteroids that could wipe out an entire
甚至人类文明的行星呢?
city or even all of human civilization
你或许会这么问
you may be asking. Well, asteroids about
20米宽 6层楼高的的小行星
20 meters wide about the size of a
每100年撞击地球2次
six-story building hit the earth about
造成
twice every 100 years and cause an
500千吨的爆炸量
explosion of about 500 kiloton for about
大约是广岛原子弹的30倍
30 times the scale of Hiroshima the last
这些事件的最近迹象发生在2013年
one of these signs events happened
苏联的车里雅宾斯克
fairly recently in 2013 over chelyabinsk
一颗小行星未被检测到
russia the asteroid remained undetected
直到它进入
by humanity until it entered the
大气层 人们才发现
atmosphere and weighed about the same as
它有艾菲尔铁塔那么重
the Eiffel Tower despite being just 20
尽管只有20米宽
metres wide
成千上万的人看见了它
it was witnessed by thousands of people
离地30公里时爆炸
before exploding 30 kilometers above the
损毁了7200座建筑物
ground which damaged 7200 buildings
横跨6座城市
across six different cities like this
造成1500人重伤
one injured 1500 people severely enough
住院接受治疗
to visit a hospital and caused 30
带来了了3千万美元财产损失
million dollars in damage
巧合的是 16个小时后
coincidentally just 16 hours after this
另一颗小行星
meteor struck the earth another asteroid
比这颗大一半 30米宽
that was fifty percent larger at 30
与地球擦肩而过
meters wide just barely missed the earth
仅距地球
at a distance of only twenty-seven
2万7千700米
thousand seven hundred kilometers or
这大概是两个地球排排放 边靠边的距离
about the distance of two earths placed
这两颗小行星
side-by-side the asteroids were not
毫无关联
related to each other and had completely
运行轨迹也完全不同
different orbits but
但这并不是第一次不可思议的巧合
not the first weird coincidence earth or
地球甚至人类与小行星
even humanity has had with near-miss
擦肩而过。1989年3月23日 一颗小行星
asteroids. On march 23rd 1989 an asteroid
约宽300米
300 meters wide about the same size as
迪拜大楼的大小
this skyscraper in Dubai miss the earth
仅70万千米与地球错过
by just 700,000 kilometers and passed
精准地经过了
through the exact same position that the
地球6小时之前所在的位置
earth was in a mere six hours previously
数百万年来地球的运行轨迹
had that asteroid been only six hours
只比这颗小行星早6个小时
early on its journey of millions of
它有可能造成
years it would have impacted and cause
有记录以来的最大爆炸
the largest explosion in all of recorded
600兆吨的爆炸量
history about 600 megatons or 12 times
是威力最大的核武器
the power of the Tsar Bomba, the largest
沙皇炸弹所产生的爆炸量的12倍
nuclear weapon ever detonated. The
有记录以来 已知的最大的行星
largest meteor known to have actually
撞击地球
hit the earth during our recorded
很可能是通古斯大爆炸事件
history was probably the Tunguska event
发生于1908年
which happened back in 1908. In that year
一颗小行星 60米到190米宽
an asteroid somewhere between 60 meters
在西伯利亚荒野
and 190 meters wide exploded just a few
上空爆炸
kilometers above the remote wilderness
爆炸的威力
of Siberia. The power of the explosion
达到了3到5兆吨
was somewhere between three and five
可与当代
Megaton. comparable to a modern-day
氢弹匹敌。据估计
hydrogen bomb. It is estimated that
这一地区的1千800万树木
eighteen million trees were destroyed by
被爆炸摧毁
the blast over an area about the size of
相当于罗德岛那么大 因为
Rhode Island but because of the extreme
处在西伯利亚极偏远地区 尤其是在1908年
remoteness of Siberia especially in 1908
是否有人丧生也不为所知
it’s unknown if anybody actually died
不过 报道所知 冲击波
from this event but the shockwave did
震碎了窗户
reportedly shatter windows and knock
震倒了数百公里外的人
people down up to hundreds of kilometers
估计类似事件
away. An event like this is estimated to
平均每1200年才会发生一次
happen only about every 1,200 years on
但确实存在更大的小行星
average but there are even larger
撞击地球
asteroids that have hit the earth in
在史前时代
prehistoric times that may hit us in the
但也可能会在未来发生
future. Asteroids the size of one
一千米大小的小行星撞击地球似乎是
kilometer appear to hit our planet about
每44万4000年一次
once every four hundred forty-four
释放约2万3千
thousand years and release about 23,000
兆吨爆炸量 相当于460个沙皇炸弹爆炸
megatons, or 460 Tsar bombas. Larger
5千米大小的小行星撞击地球
5-kilometer asteroid impact the earth
大概每2千万年一次
about once every 20 million years and
产生约
can create explosions equals a two-point
2.84十亿公吨爆炸量 相当于5万6千800个沙皇炸弹
84 gigatonnes or 56800 tsar bombas and
最终 重量级小行星
finally truly Titanic asteroids over 10
10千米大小 能够
kilometers in size that are capable of
毁灭地球上的生命
ending life on the planet strike the
这种情况极其罕见
earth very rarely the last known
上一次类似毁灭性撞击
instance of something this big hitting
发生在6千600万年以前
our planet with 66 million years ago but
使地球上75%的物种
it did completely wipe out about 75%
灭绝
of all living things on the planet
包括恐龙在内
including the dinosaurs assuming that
假设这种概率将会继续
these rates continue for the next
接下来的十亿年内 会有
billion years there exists right now
2000颗小行星大小超过1千米
about 2,000 asteroid larger than one
最终会撞击地球
kilometer that will eventually strike
但是在何时何地
our planet but when and where exactly
这种大灾难会发生
may these apocalypse happened to answer
要回答这个问题 我们必须明白
that question we must understand that
据估计有1万4千颗小行星
there are an estimated 14,000 asteroids
被视为近地小行星
that are considered near-earth object,
也就意味着它们的运行轨道
meaning that their orbits come
在某种程度上与地球的运行轨道非常接近
relatively close to Earth at some point.
发现其中93%的小行星
93% of these asteroids that are one
有1千米宽或者更大
kilometer wide or larger are thought to
依然有70颗这样巨大的
have been discovered which would leave
物体
about 70 of these massive objects
隐藏在黑暗中 未被探测到
remaining so far undetected in the
被发现的
darkness. Of all the asteroids that have
1651颗小行星
been discovered 1651 are considered by
美国国家航空航天局认为它们有潜在危险
NASA to be potentially hazardous out of
其中157个要大于1千米
which 157 are larger than one kilometer
除非人类极其不幸运
but unless humanity is absurdly unlucky
我们被这些小行星撞击的几率
our odds of being struck by any of these
在将近的未来几乎是零
in the near future is almost nil the
最可能被撞击的 是一颗
most likely impacted with an asteroid
宽160米的小行星 那结果会很糟糕
160 meters wide which would be bad if it
但这种几率625分之一
happened but the odds are only one in
并且直到
625 and it wouldn’t even hit until
2185至2198年的某个时间才可能会发生
sometime between 2185 and 2198. Another
另外一颗小行星 大约490米宽
asteroid about four hundred ninety
可能会更糟一点
meters wide which would be a lot worse
但发生撞击几率只有
but has just a one in two thousand seven
2700分之一
hundred chance of hitting us around that
发生撞击时间范围与上一颗相同
same time frame and the third most
第三颗最可能撞击地球的小行星要更大
likely on the list is a big one at one
有1.3千米宽
point three kilometers wide but only has
但撞击几率只有8333分之一
a one in 8333 chance of hitting our
在遥远的未来2880年
planet in the distant future of 2880 but
但这个几率要比
that’s still a little better odds than
你在一生中赢得奥斯卡金像奖要高
you winning an Academy Award sometime in
也远比
your lifetime and significantly better
未来你赢得彩票的几率要高
than your odds of ever winning the
在遥远的未来
lottery in the very far just in future
135万年后
about 1.35 million years from now the
行星Gliese 710 将会经过
star gliese 710 will pass a mere 77
与地球相距仅77光日的距离
light-days from the earth which is 20
比目前所知距离地球最近的行星还要再靠近20倍
times closer to us than the closest star
它会给太阳系带来严重干扰
is today and it would severely mess up
更多的小行星
our solar system by sending more
会飞向地球
asteroids flying towards us from the
它们来自太阳系的外围
outer reaches of the solar system there
遥远的未来 超过2000个巨大的行星在那儿静静等候
are over 2,000 huge asteroids waiting
我们的星球
for our planet in the distant future but
但是 当它们无可避免地来敲响我们的家门时
will humanity still be waiting around
人类会无动于衷
for their arrival when they inevitably
等待它们的到来吗?
come knocking
非常感谢你们的收看
so thank you for watching this video. I
希望你们能喜欢这个视频
hope that you enjoyed what you just
如果你喜欢它
watched and if you
不妨订阅
did I hope that you’ll consider subscribing
我的栏目
to my channel to stay updated with
继续观看类似视频
content just like this in the future by
点击这里订阅
clicking over here you can watch some of
同时 你可以点击这里
my other videos in the meantime by
观看其他视频
clicking over here on the left side and
期待你们观看我的下一部视频
I’ll be looking forward to you watching
再次感谢
my next video soon. Thank you so much
你们的观看
again for watching

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视频概述

有小行星撞击过地球吗?地球被小行星击中的几率有多大?

听录译者

收集自网络

翻译译者

Amy

审核员

审核团H

视频来源

https://www.youtube.com/watch?v=TB7y45m4sPI

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