Name: 宇宙にリングワールドを作ったら？ (What If We Built A Ringworld In Space?)
Uploaded: 2021-01-14T10:39:41.000Z
Duration: 4 min 9 s
Description: VoiceTubeの動画で発音を聞きながら英語表現を覚えよう！学べる英語：

法助動詞 B1

様態の副詞

What if instead of finding a potentially habitable exoplanet

with a radius of 150 million km (93 million mi)

Big enough for trillions of humans to call home.

You'd live on an enormous landmass on the inner side of the ring.

The outer shell would protect you and all those trillions of people

your first would be finding the material.

The International Space Station roaming the Earth's lower orbit right now

would tip the scales at no less than a million tons.

The Kuiper Belt beyond the orbit of Neptune would do just fine.

This ring of icy bodies stretches out for almost 3 billion km (1.9 billion mi).

would have enough material for this project, but...

it's hard to tell exactly how much we'd need

We might have to sacrifice all the planets,

Our ringworld and the Sun would be the only things left.

If we could manage to gather and transport all the material available,

an army of robots and maybe hundreds of generations

to realize that our structure was not stable enough.

Because the megastructure would turn out so enormous,

it would break any known molecular bonds.

We'd have to find a way to make use of one of the fundamental forces of nature -

It bonds material on the scale of atomic nucleus

Or maybe we'd come up with a new super-strong material altogether.

every interstellar body passing through our Solar System

The next thing we'd have to worry about is gravity.

we'd just have to spin the ringworld at nearly 2,000,000 km/h (1,200,000 mi/h).

We'd have to build up the speed over time.

Luckily, maintaining it in the frictionless environment of space

Such rotation would generate centrifugal force,

and that, in turn, would create an artificial gravity

With gravity solved, we'd bring in the atmosphere

For the inhabitants of the megastructure, it would always be daytime.

Unless we could create a day and night cycle

But for all the epicness of the world we just created,

A single asteroid strike could cause the structure to drift closer to the Sun.

could doom the entire structure together with its inhabitants.

It's just too risky to build it around the Sun.

with a huge ring space station in the Earth's orbit.

字幕リスト動画再生

宇宙にリングワールドを作ったら？ (What If We Built A Ringworld In Space?)

eventually

massive

figure

enormous