I'm a science communicator and host for Seeker.

[番組ホスト　マレン･ハンスバーガー]

And this is the Light Speed Learning Playlist,

ここは太陽エネルギーについて学ぶサイトよ

all about solar energy.

Seekerの ワールドソーラーチャレンジの動画から―

You probably found your way here

ここにたどり着いてくれたと思う

by way of Seeker's awesome documentary series

あのシリーズでは デレクと―

with YouTube Originals

[デレク･ミューラー]

on the 2019 World Solar Challenge.

オーストラリアの現場を訪ねる

In that series, you'll get a chance

世界中から集まった44チームが 壮大なレースで競い合うの

to join Veritasium's Derek Muller

各国の技術チームが 心血を注いだソーラーカーが―

on the ground in Australia with Seeker,

総延長約3,000キロの砂漠地帯を 太陽エネルギーのみで走破する

where 44 teams from around the world

厳しいレースになる

compete in an incredible race across the Outback.

世界最高峰で 最も困難な ソーラーカーレースだ

Teams of engineers and innovators

熱いレースアクション

push their limits in their one-of-a-kind solar race cars

無謀な運転に スピンアウト

to cut across roughly 3,000 kilometers of desert

クラッシュすることも

from Darwin to Adelaide, powered by the sun.

悲しみあり 喜びあり

This is a tough race.

多くの革新的な技術を起用

It is the premiere,

最新のソーラーアレイや極秘の電池

most difficult solar race in the world.

空気力学を応用した設計など

MAREN: It's got hot racing action,

この学習サイトでは―

pun intended,

大会の背後にある科学や技術を 深く掘り下げる

daredevil driving, uncontrolled spin-outs,

７つの章では デレクと共に―

and fiery crashes.

核融合のすべてを学んでいくの

-It's got tears and triumph. -[ALL CHEERING]

ソーラーパネルの仕組みを理解し―

And it features loads of innovative technology

ソーラーカーの内部を検証

from the latest solar arrays

電池を改良して 空気力学を掘り下げ

to top-secret batteries,

ソーラーカーの未来を探る

to innovative aerodynamic design...

学習サイトを見終えたら―

Which brings us to this Learning Playlist,

太陽光発電の専門家の仲間入りね

where we take a deeper dive

少なくとも仕組みを理解できる

into the science and technology

各章は１つ前の章に基づいている

behind the World Solar Challenge.

好きな順番で見てくれても 問題ないけど

That's right. Over the next seven chapters,

順番どおりが おすすめよ

with some help from Derek,

まずは太陽について簡単におさらいを

we are going to learn all about nuclear fusion,

紀元前1223年頃まで時をさかのぼろう

understand how solar panels turn sunlight into energy,

この頃 記録上の最古の日食が―

go under the hood of a solar race car,

現在のシリアにあった 古代都市ウガリトで観測された

break down batteries and build better ones,

以来 太陽の研究法は高度になっていった

dig into aerodynamics

太陽に関する知識が数十年前まで―

and finally, explore the future

地球からの観測だけに基づいていたとは驚きね

of solar vehicles.

太陽と地球は１億5,000万キロも離れてる

After watching the Light Speed Learning Playlist,

そして宇宙時代に突入

you'll be one of the foremost experts on solar power

60年余りの間に―

from start to finish.

人類は8,000機以上もの衛星を 宇宙へ送った

Or at the very least,

太陽の解明を進めるための 重要なミッションも行われた

you'll have a pretty solid understanding of

例えばユリシーズ

how it all works.

太陽圏観測衛星SOHO

And just a heads up, each chapter of our playlist

ジェネシス ひので

will build on the previous chapter.

さらにIRISなどが含まれるわ

So, although you can skip ahead,

これらのミッションによって 太陽の研究が進んだ

and you're welcome to watch the playlist

科学者たちは太陽風のサンプルを収集し―

in whatever order you choose,

太陽磁場の測定や 太陽物質の謎を解明することも可能になった

you'll probably wanna watch in the order we've laid out.

最近ではNASAが パーカー･ソーラー･プローブを打ち上げた

So, let's start with a little brief

太陽大気の最外層である コロナに突入して探査を行う

on what we know about the sun so far.

熱やエネルギーが コロナ内を伝わる仕組みや―

Travel back in time with me to sometime around 1223 BCE.

太陽風加速の解明が進むわ

The oldest known record of a solar eclipse

さらに最近では欧州宇宙機関とNASAが―

is from around this time,

ソーラー･オービターを打ち上げた

and was found in the ancient city of Ugarit,

太陽が太陽系全体に及ぼす影響を 調べることが目的よ

in what is now modern day Syria.

どちらも水星の軌道に入る

Since then, our methods for studying the sun

パーカー･ソーラー･プローブは―

have grown more and more sophisticated.

太陽から616万キロまで近づく

Now, it's kind of mind-blowing to realize that

あまり近いと思えないかも

up until a few decades ago,

でも実際には近すぎて―

our knowledge of the sun only came from observations

太陽を撮影できないくらいなの

made from here on Earth,

長年の観測で

which is approximately 150 million kilometers away.

太陽について 多くの事実が判明した

And then came the Space Age.

この黄色矮星は

In a little over six decades,

重力により 太陽系を形成している

we've sent more than 8,000 satellites into space.

半径69万5,700キロの巨大なガスの塊で―

And there have been several important missions

主成分の水素とヘリウムが 質量の98％以上を占めている

undertaken specifically to help us

太陽の誕生についての有力な理論もある

get a better understanding of our sun,

回転しているガスやちりの雲が収縮して

including the Ulysses mission,

太陽系が形成された

the Solar and Heliospheric Observatory,

でも太陽のエネルギー源が 分かってきたのは

or SOHO,

この100年以内のことよ

The Genesis mission, Hinode,

核融合という複雑な過程で―

and IRIS,

地球上のすべての生命を支えてる

the Interface Region Imaging Spectrograph.

核融合についての詳細は次の章を見てね

These missions, along with several others,

太陽が膨大なエネルギーを作る方法を解説する

allowed us to get

a much deeper understanding of our sun.

They gave scientists the opportunity

to collect an actual sample of the solar wind,

measure the sun's magnetic fields,

and uncover how solar material moves

through the sun's atmosphere.

More recently,

NASA launched the Parker Solar Probe.

The mission being to touch the sun

by flying into its corona,

that's the outermost part

of the sun's atmosphere,

providing us with a better understanding

of how heat and energy

move through the sun's corona

and what accelerates solar wind.

And even more recently,

the European Space Agency and NASA

launched the Solar Orbiter

to answer our fundamental question

about how the sun is able to create

and control the space environment

throughout our solar system.

Both of these missions

will get within Mercury's orbit, too.

And the Parker Solar Probe will get as close as

6.16 million kilometers to the sun,

which I know may not sound very close,

but keep in mind, that means that the Solar Probe

will be too close to the sun to directly image it.

Thanks to centuries of observations,

we actually know a lot about our sun.

We know that it's a yellow dwarf star

whose gravity helps

hold our solar system together.

We know its size,

we know that it's a giant ball of gas

composed mostly of hydrogen and helium,

which, when combined,

make up more than 98% of its mass.

And we even have a widely-accepted theory

for how the sun formed,

out of the collapse of that same giant,

rotating cloud of gas and dust

that formed the rest of our solar system.

But it's only been within the last 100 years

that we've come to understand

how the sun generates its power,

by a complicated process known as fusion,

which pretty much sustains all life on our planet.

To learn more about this amazing process,

stick around for the next chapter

of our Learning Playlists,

where we break down exactly how

the sun generates so much energy.