Over the summer researchers identified seven specks of dust returned to Earth by the Stardust spacecraft, which spent 12 years in space and tried to collect samples from the wake of a comet.

今夏天，研究人员为“星尘”号宇宙飞船带回地球的七个灰尘颗粒做鉴定。“星尘”号宇宙飞船在太空中度过12，直试图从个彗星尾迹收集样本。

These birds have wingspans up to 12 feet and for some reason they like following the wake of the ship so they're actually hanging around us, which is very cool.

这些鸟的翅膀展翅长达12英尺，出于某种原因，这种鸟喜欢跟随船的尾迹，所以它们实际上直在我们附近徘徊，这非常。

In zones of increased turbulence, the planes' wakes will decay more quickly and the effect will diminish.

在强紊流区城，飞机的尾迹减弱得更快，效果也将消失。

Those astounding fighter jet formations, streaming red, white, and blue to salute America.

那些令人惊叹的战斗机编队，拖着红、白、蓝色尾迹，向美国致敬。

He strolled off trailing douds of incense, not even bothering to look towards the Rolls-Royce.

他漫步离开熏香的尾迹， 甚至懒得看劳斯莱斯。

An aeroplane was leaving a vapour trail across the sky and I noted that the streetlights were still on from the night before.

架飞机在天空中留下凝结尾迹，我注意到街上的路灯仍然亮着，那是前晚没关的。

" So if you look up in the sky, you probably see at some point an aircraft, and behind that aircraft are white fluffy streaks. And that's what we call a contrail."

“所以，当你抬头望天，或许会在某刻瞥见架飞机，而在那飞机身后，拖曳着白色的蓬松痕迹。那就是我们所说的尾迹云。”

Every time you zoom in a level, a 256 by 256 pixel tile represents a quarter of the area of the previous tile, so the picture is four times, a z-tail.

每次放大级， 个256乘256像素的瓦片代表前级瓦片面积的四分之，因此图像放大四倍， 形成个z字形尾迹。

The entire launch phase should last around 10 minutes, so you could see the rocket plume with a little luck and if you're able to stay up.

整个发射过程大约持续10分钟，所以如果你运气好而且能熬夜的话， 你应该能看到火箭尾迹。

They fall  in towards the Sun from different directions and spew out the exhaust of dust as the ice  sublimates due to heat from the Sun.

它们从不同方向朝太阳坠落，并在冰层因太阳热量而升华时喷出尘埃尾迹。

You know, they do that with kind of, in all of the weird chemtrail conspiracy theories, there's a lot of weather manipulation in that too.

你知道吗，在所有奇怪的化学尾迹阴谋论中，也有很多关于天气操控的内容。

Green mountain peaks stand tall in the distance, and above, an airplane flies high, leaving a trail of white in the cobalt blue sky.

远处翠绿的山峰高高耸立，空中架飞机飞得很高， 在蔚蓝的天空中留下道白色的尾迹。

Well, these condensation trails form when humid exhaust from jet engines cools very quickly in cold, dry air at high altitudes.

这些凝结尾迹的形成是由于喷气发动机排出的潮湿废气在寒冷、干燥的高空迅速冷却所致。

Since its introduction in 1969, the 747's  unique shape and quadruple contrails have become a familiar sight in the  skies.

自 1969 推出以来，747 独特的外形和四尾迹已成为天空中常见的景象。

So we'll create a group of these tails, not just for the zeroth dot, but for all of the dots.

所以我们将会创建这些尾迹的个组，不仅针对第零个点，而是针对所有的点。

Two Argentine Skyhawk fighter jets slice through the South Atlantic sky, trails of white vapor tumbling from their wingtips.

两架阿根廷天空鹰战斗机划过南大西洋的天空，翼尖拖着白色的尾迹。

And the other thing that I'd like to piggyback in is stratospheric aerosol injection, also known as chemtrailing.

另个我想附带提到的是平流层气溶胶喷射，也被称为化学尾迹。

It was the wake of a shark.

那是鲨鱼的尾迹。

There were no jet contrails in the sky.

天空中没有喷气式飞机的尾迹。

And I kind of wanted to let's I'll shove the chemtrail question for later.

我想把化学尾迹的问题留到后面再说。