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

由气是气态的，所以我们看不到它，但它依然真实存在。

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，除了看起来非常酷之外，它们并没有为我们揭示这颗气态巨行的真实本质。

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

土是一个巨大的气态行，这意味着它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.

它以是液态的流，气态的汽或是固态的冰。

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.

研究这颗气态巨行的天文学家表示，它的颜色是深蓝色的，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，科学家更加确定的一种存在那些气态巨中的奇异物质就是表现出金属性状、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.

光这一点就使它显得极其反常，这说明，我们的行是由4颗稳固的内行、4颗气态的外行和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”的气态巨行，这意味着它距离其主恒非常近。

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.

它由欧洲航天局（ESA）运行，预计将 2031 年抵达大家最喜欢的气态巨行（对不起，土）。

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，国际天学文联合国宣布，他们发现木这颗气态巨行的卫又增加了10颗。

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

木，土，天王，海王一个比一个远离太阳都是拥有着气态外表的远日行。

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的不稳定气象，天王天气变化平稳。

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

这对我们的球在撞上这颗气态巨后的生存机会有何启示？

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”——近距离围绕恒运行的气态巨——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，木就会从一个金属核开始，一旦它变得足够大，就会吸收其它气体，形成今天我们所看到的气态巨行。

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.

与太阳外围的气态体不同，冥王周围没有环，但它有一层稀薄的大气，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.

“有证据表明，这是有史以来观察到的气态巨行形成的最早阶段。”

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

它那气态身躯和强烈的风暴，产生了太阳里最不一样的环境。

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

我们发现的多数球要么是像海王一样的冰巨，要么是像木和土这样的气态巨。