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  • Saturn's largest moon, Titan, is unique.

  • It has its own atmosphere.

  • Not only that, it's the only planet or moon

  • other than Earth to have bodies of liquid on its surface.

  • Titan is the second largest moon in our entire Solar System.

  • It's bigger than our Moon and even bigger than the planet Mercury.

  • Despite being so large, Titan has a weak gravitational pull.

  • Let's say you weigh 70 kg (154 pounds) here on Earth;

  • on Titan you would weigh just 10 kg (22 pounds).

  • Unfortunately, this means you won't be doing any epic cannonballs into Titan's lakes.

  • If you could find a cliff to jump off,

  • it would take you quite a while to float down to the surface of the liquid

  • But when you finally reached the lake,

  • you'd plummet to the bottom extremely fast.

  • The reason you'd have such a hard time keeping your head above the surface

  • is due to the liquid methane and ethane found in Titan's lakes.

  • The density of liquid methane is much, much lower than water

  • so you wouldn't be as buoyant.

  • Swimming on Earth is easy because humans aren't as dense as water.

  • When we're in a swimming pool, we weigh less than the amount of water that we displace,

  • and the force of the water pushing back on us, helps to keep us afloat.

  • In Titan's lakes, your body would be much more dense than the

  • liquid methane you'd be attempting to swim in.

  • It would feel as if you were made of stone.

  • On the surface of the lake, the liquid methane would appear completely clear,

  • but you still wouldn't be able to see too deep

  • due to the dark rock and thick atmosphere on the moon

  • In fact, Titan receives only 1% of the sunlight that we receive on Earth.

  • I should remind you, that you wouldn't even get this far without wearing a special space suit.

  • It would have to be strong enough to withstand the temperature of Titan's surface,

  • a frosty -178° Celsius (-289° Fahrenheit).

  • You'd also need it to protect you from the lack of oxygen on the moon,

  • the deadly levels of nitrogen gas, and the gasoline-like rains.

  • Okay, back to you being underwater or, under liquid methane.

  • From the bottom of the lake, to get back up to the surface you'd need to swim up 200 meters.

  • Once you reached the surface,

  • you'd quickly realize just how big the lake you're in is.

  • This is Kraken Mare, which is 400,000 km².

  • For reference, that's bigger than the Caspian Sea, the largest lake on Earth.

  • And bigger than the entire country of Japan.

  • If you don't like this lake, you have over 50 other lakes to choose from,

  • depending on what kind of view you're interested in.

  • Unfortunately, there's no surfing on these lakes.

  • You won't find any waves on Titan, as it's low gravity makes it resistant to creating them.

  • So, all in all, not a great day at the beach.

  • Swimming in these lakes would be pretty tricky, and not a lot of fun.

  • On top of that, it's not likely you'll be able to relax on the shore, or suntan.

  • Maybe it isn't the best vacation spot. But,

  • you certainly can't deny that beautiful view.

  • Now, what would happen if you were a space tourist and could travel anywhere you wanted?

  • Well, that sounds like a question for another, WHAT IF.

Saturn's largest moon, Titan, is unique.

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タイタンの湖で泳げるとしたら? (What If You Could Swim in Titan’s Lakes?)

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    林宜悉 に公開 2021 年 01 月 14 日
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