字幕列表 影片播放
-
You're looking at 60 satellites
你在看60顆衛星
-
hurtling into the sky.
飛馳在天空中。
-
And over the next few decades,
而在接下來的幾十年裡。
-
Elon Musk is hoping to send 42,000
埃隆-馬斯克希望將4.2萬個
-
of these satellites to space,
這些衛星進入空間。
-
15 times the number of operational
運作次數的15倍
-
satellites in orbit today.
今天在軌的衛星。
-
It's part of Starlink,
它是星際鏈接的一部分。
-
the expansive constellation from Musk and SpaceX
浩瀚星群
-
that hopes to bring the world
希望能給世界帶來
-
low-latency high-speed internet,
低延遲的高速互聯網。
-
promising no more buffering
滿口答應
-
and nearly instantaneous internet
和幾乎即時的互聯網
-
in every corner of the world.
在世界的每一個角落。
-
But experts worry it may come
但專家擔心它可能會出現
-
at a hefty cost for space exploration.
以高昂的代價進行太空探索。
-
Nearly half of the world's population
世界上近一半的人口
-
does not have access to the internet,
不能上網。
-
because most internet options
因為大多數互聯網選項
-
require an extensive track of costly underground cables,
需要大量昂貴的地下電纜軌道。
-
leaving many rural locations offline.
讓許多農村地區失去了聯繫。
-
And while satellite internet can reach those areas...
而衛星互聯網可以到達這些地區... ...
-
Dave Mosher: Traditional satellite internet
Dave Mosher傳統的衛星互聯網
-
is provided by a bus-sized spacecraft
由一個總線大小的航天器提供
-
that is launched 22,236 miles
發射22 236英里
-
into space in orbit around Earth.
進入繞地球軌道的空間。
-
Narrator: That distance means the satellite
旁白:這個距離意味著衛星
-
can reach places that cables can't.
可以到達電纜無法到達的地方。
-
But since that one satellite
但由於那一顆衛星
-
is meant to service a lot of people,
是為了服務很多人。
-
its data capability is limited,
其數據能力有限。
-
which then limits connection speeds.
然後限制了連接速度。
-
And that signal has to travel a long way,
而且這個信號要傳得很遠。
-
creating a lot of lag.
造成很大的滯後。
-
This is where Elon Musk and SpaceX come in.
這就是埃隆-馬斯克和SpaceX的作用。
-
Mosher: Starlink is a globe-encircling network
莫舍。Starlink是一個環繞地球的網絡。
-
of internet-beaming satellites
互聯網廣播衛星
-
that is trying to get you online
試圖讓你上線
-
no matter where you are in the world.
不管你在哪裡
-
Narrator: And there's a rather persuading element
旁白:還有一個相當有說服力的因素。
-
for SpaceX as well.
對於SpaceX來說也是如此。
-
Mosher: Elon Musk has said he's just trying to grab
莫舍爾。埃隆-馬斯克說他只是想抓住
-
a small percentage of a trillion-dollar-a-year
萬億年薪中的一小部分。
-
telecommunications industry around the world.
世界各地的電信業。
-
If SpaceX can pull this off,
如果SpaceX能夠成功。
-
the company could net about $30 to $50 billion a year.
該公司每年可淨賺約300億至500億美元。
-
Narrator: Musk and SpaceX president Gwynne Shotwell
旁白:馬斯克和SpaceX公司總裁Gwynne Shotwell
-
say that much money could single-handedly
一言九鼎
-
fund the development of Starlink, Starship,
資助《星際鏈接》、《星艦》的開發。
-
and SpaceX's Mars-launch infrastructure.
和SpaceX的火星發射基礎設施。
-
As of early October,
截至10月初。
-
SpaceX has launched more than 700 satellites into orbit,
SpaceX公司已經將700多顆衛星發射到軌道上。
-
with a plan to release a total of 12,000
計劃共發放12,000份。
-
over the next five years,
在未來五年內,。
-
half of them by the end of 2024.
到2024年底,其中一半。
-
And Musk wants to add another 30,000 to that,
而馬斯克還想在此基礎上再增加3萬人。
-
coming to a total of 42,000 satellites circling Earth.
來,共有4.2萬顆衛星環繞地球。
-
All of these satellites will also be much closer,
這些衛星也都將更加接近。
-
anywhere from 200 to 400 miles
縱橫四海
-
above the planet in low-Earth orbit.
在低地軌道的行星上方。
-
Mosher: This reduces the connection delay
莫舍。這樣可以減少連接延遲
-
that is found with traditional internet satellite.
與傳統的互聯網衛星發現。
-
Narrator: Once in orbit,
旁白:一旦進入軌道
-
these Starlink satellites will be constantly on the move,
這些星聯衛星將不斷移動。
-
which is why so many are necessary.
這就是為什麼需要這麼多的人。
-
Mosher: The problem is you have to have many satellites
莫舍爾。問題是你必須要有很多衛星
-
orbiting to make up for the fact that
軌道,以彌補以下事實:
-
you can't stay in one spot above the Earth.
你不能呆在地球上面的一個地方。
-
Because you need several satellites overhead
因為你需要幾顆衛星在上面
-
at any one time to cover many users.
在任何時候都可以覆蓋許多用戶。
-
Narrator: Every satellite will connect
旁白:每個衛星都會連接
-
with several others via laser beams,
通過激光束與其他幾個。
-
creating something like the network's backbone.
創建類似網絡的骨幹網。
-
And to actually bring this internet into your home,
而要真正把這個互聯網帶入你的家庭。
-
you'll need to get a pizza-sized antenna.
你需要得到一個比薩餅大小的天線。
-
This phased-array antenna can aim its beam
這種相控陣天線可以將其波束對準
-
at whatever satellite is overhead,
在任何衛星的頭頂。
-
which will maintain an internet signal in your home.
這將維持您家中的網絡信號。
-
But this scheme isn't without problems.
但這個方案也不是沒有問題。
-
Starlink satellites are bright.
星聯衛星很亮。
-
They reflect the sunlight and shine it back towards Earth,
它們反射陽光,把陽光照回地球。
-
so they end up looking like bright moving stars.
所以他們最終看起來像明亮的移動的星星。
-
As cool as it may look, that comes with problems.
雖然看起來很酷,但這也有問題。
-
Mosher: Starlink satellites are most visible
莫舍。Starlink衛星最明顯
-
in the night sky right before dawn and right after dusk,
在黎明前和黃昏後的夜空中。
-
which is the exact time that astronomers
這正是天文學家們
-
are hunting for near-Earth objects or asteroids,
正在尋找近地天體或小行星。
-
objects that could hit Earth and possibly harm us.
可能撞擊地球並可能傷害我們的物體。
-
Narrator: And as more satellites go up,
旁白:隨著越來越多的衛星升空
-
so does the likelihood that
所以
-
they'll interfere with astronomers' views.
他們會干擾天文學家的觀點。
-
Mosher: If Starlink continues to be a problem
莫舍。如果星聯公司繼續成為問題
-
for these type of sky surveys,
用於這類天空測量。
-
we may not have as much notice as we want
時不我待
-
to detect a near-Earth object
探測近地天體
-
and thwart it and prevent it from hitting Earth.
並挫敗它,防止它撞擊地球。
-
Narrator: Beyond detecting deadly asteroids,
旁白:超越了探測致命小行星的範圍
-
the wall of satellites could also obstruct
衛星牆也可能阻礙了
-
the search for new planets or even black holes.
尋找新的行星甚至黑洞。
-
Mosher: SpaceX realized it had to do something, and it did.
Mosher:SpaceX意識到它必須做點什麼,而且它也做了。
-
It created what's called a DarkSat,
它創造了所謂的DarkSat。
-
which is a satellite that has all of its shiny parts
衛星,它的所有部件都是閃亮的。
-
coated in a very black, dark material.
塗上一層很黑很黑的材料。
-
Narrator: It also tried adding visors
旁白:它還試著加了遮陽板
-
to shield those shiny parts from the ground.
來遮擋那些閃亮的部件。
-
But unless the satellites are cloaked
但是,除非衛星是隱形的。
-
like a spaceship in "Star Trek,"
就像 "星際迷航 "中的宇宙飛船一樣。
-
technology that does not exist,
不存在的技術。
-
none of this will fully solve the problem.
這些都不能完全解決這個問題。
-
And even if it did, there is a much bigger issue at hand.
就算是這樣,眼下還有一個更大的問題。
-
Mosher: There's a concern about space debris,
Mosher有一個關於空間碎片的擔憂。
-
because when you have so many satellites
因為當你有這麼多衛星
-
in the closest, tightest, densest orbits around Earth,
在繞地球最近、最緊密、最密集的軌道上。
-
there's a higher chance that those satellites
衛星的可能性比較大。
-
could collide with each other or with other satellites.
可能相互碰撞或與其他衛星碰撞。
-
Narrator: Those crashes would create
旁白:這些撞擊會造成...
-
clouds of debris that can orbit the Earth
殘雲
-
for years, decades, or even centuries.
幾年、幾十年、甚至幾百年。
-
Mosher: And that debris can then disable
Mosher:碎片會使人失去功能
-
or cause other satellites
或導致其他衛星
-
to crash into each other, creating even more debris,
互相撞擊,產生更多的碎片。
-
and this problem spirals out of control
愈演愈烈
-
in an effect called the Kessler syndrome.
在一種叫做凱斯勒綜合徵的效應中。
-
And if we reach that,
如果我們達到了這一點。
-
then essentially space is too unsafe to access.
那麼本質上空間太不安全,無法進入。
-
Narrator: To be clear, the risk
旁白:說白了,風險
-
of a runaway Kessler syndrome is very low.
逃跑的凱斯勒綜合症的發生率是非常低的。
-
Mosher: But the potential impacts of that are so high
莫舍。但這可能帶來的影響是如此之大
-
that scientists are working very hard
科學家們正在努力工作
-
to control such an event from ever happening.
來控制這種事件的發生。
-
Narrator: SpaceX has said its satellites
旁白:SpaceX已經說過它的衛星
-
can automatically move out of the way to avoid collisions.
可以自動讓開,避免碰撞。
-
But dozens of SpaceX satellites are already disabled
但幾十顆SpaceX衛星已經失效了
-
and can't move at all, posing a potential threat.
而且根本無法移動,構成了潛在的威脅。
-
And those concerned with SpaceX's plans
而那些關注SpaceX計劃的人
-
are lobbying the FCC to rein in the company
正在遊說聯邦通信委員會控制該公司。
-
and more strictly regulate low-Earth orbit.
並更加嚴格地規範低地軌道。
-
And that could make it more expensive
這可能會讓它變得更昂貴
-
and harder to deploy the planned 42,000 satellites.
和更難部署計劃中的42000顆衛星。
-
But it doesn't stop at Starlink.
但它並沒有停止在星聯公司。
-
Amazon's Kuiper project, OneWeb,
亞馬遜的Kuiper項目,OneWeb。
-
China's Hongyan, and other projects
中國紅巖等項目。
-
are looking to challenge SpaceX
正在尋求挑戰SpaceX
-
by launching their own global networks
通過啟動自己的全球網絡
-
of hundreds or thousands of satellites.
數百顆或數千顆衛星的。
-
If they all got their way with little to no regulation,
如果他們都能在幾乎沒有監管的情況下獲得自己的利益。
-
we could end up with 100,000 satellites
我們可能會有10萬顆衛星。
-
encasing our planet within the next 10 years,
在未來10年內將我們的地球包裹起來。
-
dramatically increasing the risk
大大增加了
-
of blocking off space for everyone.
的封鎖空間,為大家。