宇宙の構造

【Illustrated and easy to understand!】What is Saturn like?

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Chi-ga kun
Chi-ga kun
Hakase! I have no idea what kind of planet Saturn is… Please tell me about Saturn!
Hakase
Hakase
Alright.
By the way, Chi-ga kun, what is your impression of Saturn?
Chi-ga kun
Chi-ga kun
I only know that he has a stylish ring that looks like the brim of a hat.
And what that ring is made of is a mystery.
Hakase
Hakase
I see. After you return from your Saturn expedition, you will surely become a Saturn master.
Let’s go out to Saturn to learn more about it!

Saturn is one of the planets in our solar system.

I think there are a lot of people who think “I don’t know what kind of planet Saturn is after all!

This article will help you understand what kind of planet Saturn is with illustrations.

This time, let’s go out to Saturn with the guinea pigs!

Chi-ga kun
Chi-ga kun
Let’s get to the probe ASAP!

Let’s explore Saturn!

Hakase
Hakase
First, open a map of the solar system.
Chi-ga kun
Chi-ga kun
Yes! So today it’s Saturn we’re exploring!
Hakase
Hakase
Saturn is the second planet in outer orbit after Jupiter, as seen from the sun.

Basic Data of Saturn

Chi-ga kun
Chi-ga kun
We’ve arrived at Saturn! Wow! Those rings are fancy!
Let’s see some basic data on Saturn right away!
Hakase
Hakase
Here are some basic data on Saturn.
Chi-ga kun
Chi-ga kun
Its radius is 9.44 times that of the earth!
Its mass is 95 times that of the Earth!

We just went on an expedition to Jupiter, the largest planet in the solar system, so we’re used to its size, but it’s still incredibly large!
Hakase
Hakase
Yes, it is. Jupiter’s mass is 318 times that of the Earth, so it may be small in comparison, but it is still quite large.

The ring is ice and rock!

Chi-ga kun
Chi-ga kun
Hakase! What is this stylish ring made of?
Hakase
Hakase
Take a guess.
Chi-ga kun
Chi-ga kun
Let’s see, a characteristic of Jupiter-like planets is that their atmospheres are mainly composed of hydrogen and helium, so I am thinking that these rings are also composed of hydrogen and helium.
Hakase
Hakase
Actually, no. This ring is composed of ice and rocks.
Chi-ga kun
Chi-ga kun
Ice and rocks!
This ring is solid!
Hakase
Hakase
That is right. But the surface of Saturn itself is gaseous or liquid hydrogen and helium, just as Chi-ga kun said.
Chi-ga kun
Chi-ga kun
Same as Jupiter!
Hakase
Hakase
Finally, in summarizing this expedition report, I would like you to focus on its density.
Chi-ga kun
Chi-ga kun
Density?
Hakase
Hakase
Yeah.
As indicated earlier in the basic data, Jupiter has a very small density of 0.69 g/㎤.
Chi-ga kun
Chi-ga kun
Ah! Given that the density of water is 1 g/㎤, Saturn is smaller than the density of water!
Hakase
Hakase
Yes, that’s right. You must be surprised.
It has the smallest density of all the planets in our solar system, being the only one with a density below 1 g/㎤.
Chi-ga kun
Chi-ga kun
What a surprise!
I’ve summarized my report on this expedition!
Hakase
Hakase
Well organized.
The expedition is over.

Summerly

Hakase
Hakase
This time, we learned about Saturn through the Saturn expedition. I think we learned that Saturn is lighter than it looks.
Chi-ga kun
Chi-ga kun
Lighter than water, that is something of a surprise! Now I know what the ring is, and I’ve solved another mystery!
Hakase! Thank you for exploring with us today!

Thank you for joining us on this exploration to the end!