宇宙の構造

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

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Chi-ga kun
Chi-ga kun
Hakase! After Saturn, Uranus is next in order, so I’d like to go explore Uranus, but…
Hakase
Hakase
You’re not getting on today?
Chi-ga kun
Chi-ga kun
No, Uranus is not familiar to me at all, or rather, it scares me. It looks pale and mysterious.
Hakase
Hakase
It sure looks weird. But it is for the purpose of investigating Uranus. I will be with you if you need me.
Let’s go to Uranus!

Uranus is a somewhat weird blue-white planet.

I think many people have no idea what kind of planet Uranus is.

By reading this article, you can learn what kind of planet Uranus is.

In this article, we take a trip to Uranus with the guinea pigs!

Chi-ga kun
Chi-ga kun
I’m scared, but I’m going to get on that probe with all my heart!

Let’s explore Uranus!

Chi-ga kun
Chi-ga kun
On the solar system map, here’s Uranus for us to explore today!
Hakase
Hakase
Uranus is in the second orbit from the outside among the planets in the solar system.

Basic Data of Uranus

Chi-ga kun
Chi-ga kun
We’ve arrived at Uranus!
As I thought, it’s a pale color that looks like it’s in some kind of bad shape, right?
Hakase
Hakase
Maybe Uranus is fine.
Chi-ga kun
Chi-ga kun
It is smaller in size than Jupiter and Saturn, but still larger than Earth, right?
Let me see some basic data on Uranus!
Hakase
Hakase
Okay, here’s some basic data on Uranus.
Chi-ga kun
Chi-ga kun
Its radius is four times that of the Earth and its mass is 14.5 times that of the Earth!
It is bigger than the earth after all!
Hakase
Hakase
Yes, it is. The density is smaller than that of the Earth because the surface of Jupiter-like planets is covered with gaseous~liquid hydrogen and helium.

Rotation axis overturned!

Hakase
Hakase
Here’s an interesting feature Uranus has that no other planet has…can you guess what it is?
Chi-ga kun
Chi-ga kun
Eh? What is it?
Hakase
Hakase
The hint is the axis of rotation.
Chi-ga kun
Chi-ga kun
Axis of rotation?
Eek, I can’t really tell with the naked eye because Uranus has no pattern!
Hakase
Hakase
Uranus orbits with its axis of rotation inverted!
It might have been difficult to notice this from on-the-spot observation.
Chi-ga kun
Chi-ga kun
Is the axis of rotation overturned?
If you compare it to a guinea pig, is it moving while lying down in a hutch?
Hakase
Hakase
I’m not sure about that analogy, but maybe yes.
Chi-ga kun
Chi-ga kun
That’s a feature not seen on any of the planets we’ve explored so far!
Hakase
Hakase
By the way, do you know what the main component of Uranus’ atmosphere is?
Chi-ga kun
Chi-ga kun
Eh? Since it is a Jupiter-type planet, isn’t it hydrogen and helium?
Hakase
Hakase
That is true, but Uranus also has methane in its atmosphere.
Methane absorbs red light, which is why Uranus has a pale blue color with little red.
Chi-ga kun
Chi-ga kun
So the pale color had a proper meaning!
Is there anything else I should add to the expedition report?
Hakase
Hakase
That’s right. What makes it different from other Jupiter-like planets is the ice under the atmosphere.
Chi-ga kun
Chi-ga kun
I see!
Why is Uranus made of ice under its atmosphere?
Hakase
Hakase
Uranus is far away from the sun.
That is why Uranus is such an ice planet.
Chi-ga kun
Chi-ga kun
I got it!
I’ve put together a report on the exploration.
Hakase
Hakase
The expedition is over. Let’s go back to Earth!

Summary

Hakase
Hakase
Today we learned about Uranus through an expedition to Uranus. Uranus is a planet that is not very well known, but it is actually a very interesting planet!
Chi-ga kun
Chi-ga kun
Lying down and orbiting, sounds kinda nice! (lol)
My impression of Uranus has changed 180 degrees!
Hakase! Thanks for teaching me today!

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