Name: 互聯網幾十年來一直沒有改變--直到現在。 (The internet hasn’t changed for decades — until now.)
Uploaded: 2022-07-20T16:45:35.000Z
Duration: 6 min 38 s

really isn't that different from what we had 50 years ago.

真的和我們50年前的情況沒有什麼不同。

and we've switched from copper wires to fiber optic cable.

而且我們已經從銅線換成了光纜。

But it's still one big, physically connected system.

但它仍然是一個大的、物理上相連的系統。

A kind of arterial network strung between telephone poles

懸掛在電線杆之間的一種幹線網絡

connecting basically every computer in the world.

基本上連接世界上的每一臺計算機。

A handful of companies are trying to build

This is what a satellite-based internet would look like.

這就是基於衛星的互聯網會是什麼樣子。

Hundreds or even thousands of satellites orbiting the Earth.

數百甚至數千顆衛星圍繞著地球運行。

It's expensive to launch and maintain a network like this,

啟動和維護這樣一個網絡的成本很高。

but there are already a few up and running.

SpaceX is Starlink project is probably the most famous.

SpaceX的Starlink項目可能是最著名的。

But OneWeb is also fleshing out its satellite constellation

但OneWeb也在充實其衛星星座的內容

and Amazon's Project Kuiper secured a massive contract

和亞馬遜的Kuiper項目獲得了一個巨大的合同

but those have been geosynchronous satellites.

Maintaining a stable orbit over a specific spot on Earth.

在地球上的一個特定地點保持穩定的軌道。

are at a specific altitude, just over 22,000 miles up,

是在一個特定的高度，剛剛超過22,000英里的高空。

that the services tend to have awful latency.

The new generation of satellite internet systems

in low to medium Earth orbit between 200-1200 miles up,

在200-1200英里高的中低地球軌道上。

a low enough latency to make internet service really work.

一個足夠低的延遲，使互聯網服務真正發揮作用。

The lower orbit also means the satellites

have to go a lot faster to keep from falling.

必須走得更快，才能不掉下去。

To make it work, you need a whole network of satellites.

為了使其發揮作用，你需要一個完整的衛星網絡。

所以當一個人掉到視線之外的時候。

there's already another one coming into view.

So in order to tap into a constellation like Starlink,

是以，為了挖掘像星聯這樣的星座。

you need to use a terminal that relays signals

你需要使用一個能傳遞信號的終端

That satellite then needs to relay those signals down

然後，該衛星需要將這些信號轉發下去

that's connected to existing fiber optic infrastructure.

這是與現有的光纖基礎設施相連的。

That ground station then relays those signals

back to the satellite, which then relays them back to you

返回到衛星，然後由衛星將它們轉發給你

And you need to be within several 100 miles

而且你需要在幾個100英里範圍內

in order for you to get the communications that you need.

我們認為主要的服務是理所當然的

will operate out of regional data centers.

will be in central parts of the internet backbone.

將在互聯網骨幹網的中心部分。

Places like Northern Virginia and southeast London.

像弗吉尼亞州北部和倫敦東南部的地方。

But if a large portion of the internet users

are connecting through orbiting satellites,

It's the most expensive part of the network

to build and also the most delicate to maintain.

there's a good chance your neighbors did too.

of how quickly the local service crew can get out to you.

當地的服務人員能多快地趕到你那裡。

But that's not necessarily true for satellite internet.

但對於衛星互聯網來說，這不一定是真的。

Now, we're still a really long way from that happening.

現在，我們離這種情況的發生還有很長的路要走。

for these companies is having a small sliver

對於這些公司來說，有一小部分

of total users connecting through satellite networks.

通過衛星網絡連接的用戶總數的百分比。

But keeping that many satellites in the sky

但是在天空中保持那麼多的衛星

- The astronomy community is very concerned about

字幕列表影片播放

互聯網幾十年來一直沒有改變--直到現在。 (The internet hasn’t changed for decades — until now.)

specific

scenario

physical

delicate