You can't see the water vapor, because it's a gas, but it is still there.

由于水蒸气是气态的，所以我们看不到，但依然真实存在。

Now the problem with these observations is that beyond looking really cool, they don't provide any answers about the true nature of the gas giant.

但这些观测的问题在于，除了看起来非常酷之外，们并没有为我们揭这颗气态巨行星的真实本质。

Saturn is a gas giant, which means it has a thick atmosphere.

土星是一个巨大的气态行星，这意味着有一个厚厚的大气层。

All gas giants have rings. The rings are made of mostly ice and dust.

所有的气态巨行星都有环。这些环主要由冰和尘埃构成。

It takes a liquid form as running water, gaseous as vapor or solid as ice.

以是液态的流水，气态的蒸汽或是固态的冰。

Astronomers who study this gas giant have said it is deep blue in color and that severe conditions exist in the atmosphere. It has winds that can blow up to two kilometers per second.

研究这颗气态巨行星的天文学，的颜色是深蓝色的，大气条件恶劣，风速达每秒两千米。

Now, there is one weird thing that scientists are far more confident exists inside those gas giants: non-metal elements that behave like metals and conduct electricity.

现在，科学更加确定的一种存在于那些气态巨星中的奇异物质就是现出金属性状、能导电的非金属元素。

This alone makes it extremely anomalous; it means that our planetary system consists of four rocky inner planets, four gassy outer giants, and a tiny, solitary iceball.

光这一点就使显得极其反常，这说明，我们的行星系统是由4颗稳固的内行星、4颗气态的外行星和1颗孤独的小冰球组成的。

WASP-127b is a type of gas giant known as a " hot Jupiter, " which, among other things, means that it's quite close to its host star.

“WASP-127b” 是一种被称为“热木星”的气态巨行星，这意味着距离其主恒星非常近。

It's being run by the European Space Agency, or ESA, and it's slated to arrive at everyone's favorite gas-giant planet (sorry Saturn) in 2031.

由欧洲航天局（ESA）运行，预计将于 2031 年抵达大最喜欢的气态巨行星（对不起，土星）。

Until the announcement this morning by the International Astronomical Union of the discovery of an additional 10 moons about the gas-giant planet.

因为今天早上，际天学文联合宣布，他们发现木星这颗气态巨行星的卫星又增加了10颗。

Jupiter, Saturn, Uranus and Neptune, these planets farthest from the Sun make up the gassiest outer worlds of the Solar System.

木星，土星，天王星，海王星一个比一个远离太阳都是拥有着气态外的远日行星。

As a result, the weather on Uranus is mostly calm when compared to the feverish activity of the other gas giants.

所以比起其他气态巨行星的不稳定气象，天王星天气变化平稳。

And what can that tell us about our own planet's chances of surviving a crash into the gas giant?

这对我们的星球在撞上这颗气态巨星后的生存机会有何启？

Such skewed orbits are common for so-called hot Jupiters—gas giants that orbit close to their hosts.

这种歪斜轨道在所谓“热木星”——近距离围绕恒星运行的气态巨星——中很常见。

If that were the case, it started out with a rocky metallic core, and once it got big enough it drew in that gas that made it the giant we see today.

如果确实如此，木星就会从一个金属核开始，一旦变得足够大，就会吸收其气体，形成今天我们所看到的气态巨行星。

Unlike the gas giants of the outer solar system, Pluto has no rings, but it does have a thin atmosphere made mostly of nitrogen, with small amounts of methane and carbon monoxide.

与太阳系外围的气态星体不同，冥王星周围没有环，但有一层稀薄的大气，主要由氮和少量甲烷及一氧化碳组成。

" Evidence suggests that this is the earliest stage of formation ever observed for a gas giant, " he added.

“有证据明，这是有史以来观察到的气态巨行星形成的最早阶段。”

Its giant gaseous body and violent storms, make it one of the most alien environments in the solar system.

那气态身躯和强烈的风暴，产生了太阳系里最不一样的环境。

Most of the worlds we've encountered are either ice giants like Neptune, or gas giants like Jupiter and Saturn.

我们发现的多数星球要么是像海王星一样的冰巨星，要么是像木星和土星这样的气态巨星。