But out in space, there are entire exoplanets made of the stuff.

但在太空中，存在整个由这种物质构成的系外行星。

But in this case, it's a giant exoplanet.

但在这种情况下，它属于巨大的系外行星。

Nevertheless, Kepler 22b is the most promising exoplanet yet found.

然而，“开普勒22b”是至今发现的最有前景的系外行星。

The Kepler space telescope has discovered more than 130 exoplanets in our galaxy.

开普勒望远镜已经发现了银河中超过130颗行星。

Proxima B might be the closest habitable exoplanet we've got, but that doesn't mean it's close.

比邻星 B 可能是我们所知最近的宜居系外行星，但是这不意味着其实际距离很近。

That's because scientists don't know for sure if they've identified an extragalactic exoplanet.

这是因为科学家们不确定他们是否发现了一颗银河系外的行星。

Now that we've found over 4,100 exoplanets, we've learned something rather disappointing.

至今我们已发现了 4100 多颗系外行星，亦认识到一些令人失望的事实。

I actually told you how diverse exoplanets are.

我已经告诉过你们系外行星的 种类有多么繁杂了。

In March 2022, we reached a major milestone in space exploration: 5,000 known exoplanets.

2022 年 3 月，我们达成了太空探索的一个重要成就：5000 个已知系外行星。

Not all bots are bad. Some are just geeky, like a bot that describes imaginary exoplanets.

不过并不是所有机器人都是不好的。有一些机器人只是比较呆，比如有的机器人账号描绘虚构的系外行星。

And they realized that lava wasn't reflective enough to explain these bright exoplanets they were seeing.

他们发现，熔岩的反射性不足以解释他们所看到的这些明亮的系外行星。

Scientists have discovered more than 4300 exoplanets like 486b but don't pack your bags just yet.

科学家们已经发现了4300多颗系外行星，比如486 b，但现在还结束。

The other group favors the hypothesis that Fomalhaut b is an exoplanet, albeit one shrouded in dust.

另一组更倾向于“北落师门b”是笼罩在尘云中的系外行星这一假设。

And the highlighted stars are those with known exoplanets.

那些被突出标注的恒星 都有已知的系外行星。

The planets examined in the study are called exoplanets.

这项研究中检测的行星被称为系外行星。

In the last two years, astronomers have found seven exoplanets around the star TRAPPIST-1, only 40 light-years away.

在过去的两年中，天文学家在TRAPPIST-1行星周围发现了7颗系外行星，那里距地球仅有40光年。

And then, there's an exoplanet shaped exactly like an American football.

然后，这是一枚系外行星，它的形状看起来就像个美式橄榄球。

The researchers say more data will be needed to confirm the observation as an actual " extragalactic exoplanet" .

研究人员说，还需要更多的数据来证实这是一颗真正的" 星系外系外行星" 。

NASA has a satellite called TESS, the Transiting Exoplanet Survey Satellite.

美国宇航局有一颗名为TESS的卫星，即凌日系外行星调查卫星。

Starshade seeks to block out that starlight so you can image a really faint exoplanet right next to it.

遮星伞可以阻隔母星的光线，这样就能拍摄到母星附近十分模糊的外星行星。