Was it a shooting star? Meteor shower? Comet? Or aliens?

是流星吗？流星雨？彗星？还是外星人？

Now utopia has grown unfashionable, as we have gained a deeper appreciation of the range of threats facing us, from asteroid strike to epidemic flu and to climate change.

如今乌托邦式梦想已过时，我们要面对是更可怕现实，彗星撞地球、重度流感，甚至气候变更。

He also described celestial phenomena such as haloes—that is, bright circles of light around the sun, the moon and bright stars—and comets.

他也描述了天体现象，比如说晕——那是太阳、月亮和明星周圈——还有彗星。

Haley's Comet, now NASA knows of about 3,600 other comets than that one out there.

除了哈雷彗星，科学家知道其他彗星还有3600。

The Comets are soaring across Underwood, North Dakota.

彗星正呼啸着通过北达科他州安德伍德。

However, finding the comet is indeed very tricky, and scientists here have told me there are plenty of phone apps that will facilitate this.

，寻找彗星确实非常棘手，这里科学家告诉我，有很多手机应用程序可以帮助实现这一目标。

It can not be a comet; for comets have tails, said a third.

“它不可能是彗星，因为彗星都有长长尾巴，”第三个人说。

Since then, several dozen more have been detected.

从那时起，人类又发现了几十无尾彗星。

So you gonna, uh, watch the comet later?

所以你一会要，呃，看彗星吗？

Oh! Oh, like Halley's comet. Exactly.

噢! 哈雷彗星哈雷，是。

When Earth passes through a stream of this debris shed by a comet, the particles burn up in our atmosphere, and we see a meteor shower.

当地球穿过彗星散落一连串碎片时产生摩擦，这些微粒就在大气中燃烧起来，这就是我们看到流星雨。

But in July 1995, the planet was hit by a comet.

1995年7月，一彗星撞上了木星。

An asteroid, a comet, Mike Pence, or the first " Masked Singer" .

一小行星，一彗星，迈克·彭斯，还是第一个“蒙面歌王”。

By that, I mean: OK, we assume your superhero might be extra-strong, or might be able to fly or run as fast as a comet, but unless you care about the superhero's personal life, you're just reading a shallow story.

好，我们假设你超级英雄或者非常强壮，或者可以像彗星一样快速飞行或奔跑，但是只有你关注到超级英雄个人生活，你读到才不是一个肤浅故事。

It's possible that when comets hit Earth billions of years ago, elements in the ice were scattered and struck by lightning – a bright flash of light produced by electricity moving in the atmosphere.

有可能在数十亿年前彗星撞击地球时，冰中元素散落下来，被雷电击中。——雷电是电流在大气中运动产生强闪。

On its third time around the Stardust and Comet Wild Two would cross paths.

在第三次绕日运转时，星尘号会和“怀尔德2号”彗星相遇。

Newly discovered comets are now named after the famous figures proposed by the discoverers.

新发现彗星是以其发现者所推荐名人名字来命名。

Comet Halley's water is similar to that on Earth.

哈雷彗星水相似于地球。

The Eta Aquariid meteor shower is an annual phenomenon that occurs when the earth approaches a trail of dust and debris left by the famous Halley's Comet in the celestial event.

埃塔水瓶座流星雨是一年一度天象，当地球接近著名哈雷彗星在天体事件中留下尘埃和碎片时，就会发生流星雨。

This does not generally apply to comets.

但彗星不同。