We see baby stars being born in stellar nurseries surrounded by dust and gas.

我们知道原恒星诞生于充满宇宙尘埃和气体的恒星摇篮。

Cosmic dust is not quite the same as dust we know from the apartment here.

宇宙尘埃和我们在这间公寓里看到的尘埃完全一样。

These are grains of cosmic dust, which existed prior to our solar system forming.

这些都早于我们太阳系形成的宇宙尘埃颗粒。

He points out that cosmic dust isn't exactly the kind of dust you or I might be familiar with.

他指出宇宙尘埃你我所熟悉的那种尘埃。

In space, dust interacts with cosmic rays -- high-energy particles that move through space at nearly the speed of light.

在太空中，尘埃与宇宙射线相互用，宇宙射线一种以接近光速在太空中移动的高能粒子。

If you've ever looked up at the Milky Way, you've seen what's known as cosmic dust.

如果你曾经仰望过银河系，你就会看到所谓的宇宙尘埃。

It points away from cosmic noon and toward cosmic dust.

它指向远离宇宙正午，而趋向宇宙尘埃。

NASA has other samples still of very old cosmic dust.

- 宇航局还有其他非常古老的宇宙尘埃样本。

As clouds of cosmic dust were fused together by gravity, heavier metals sank toward the core.

当宇宙尘埃云在引力用下融合时，较重的金属沉向核心。

Every year, tens of thousands of tons of cosmic dust lands on Earth and mingles with terrestrial minerals.

每年，数万吨宇宙尘埃降落到地球，与地壳矿物混合。

Cosmic dust is something that has constantly annoyed scientists.

宇宙尘埃一直让科学家们头疼已的问题。

This valuable information was  obtained from the CDA mass spectrum analysis of over 300 ice grains from the E-ring.

这些宝贵的信息来自对E环中超过300颗冰粒的宇宙尘埃分析仪质量谱分析。

That means it can see through dust in the universe to find out more about what's inside.

这意味着它可以透过宇宙中的尘埃来了解更多关于里面的东西。

Cosmic dust is basically dust in space.

宇宙尘埃基本上就太空中的尘埃。

Cosmic dust is really just very small particles in the universe that are consisting of just a few molecules, often containing carbon or silicate.

宇宙尘埃实际上宇宙中非常小的粒子，仅由几个微粒组成，通常含有碳或硅酸盐。

When astronomers started using infrared telescopes, they discovered that the annoying cosmic dust is very interesting and essential to many astronomical processes.

当天文学家开始使用红外望远镜时，他们发现这些恼的宇宙尘埃其实非常有趣， 且在众多天文过程中扮演着关键角色。

The interstellar medium, by contrast, consists of charged particles, gases and cosmic dust left over from the Big Bang and other ancient  supernovae.

相比之下，星际介质由大爆炸和其他古老超新星遗留下来的带电粒子、气体和宇宙尘埃组成。

Indeed, in addition to mass loss, the earth also acquires additional mass from space approximately 40,000 tonnes of cosmic dust settles on the Earth's surface throughout the year.

事实上，除了质量损失外，地球还从太空获得额外质量，全年约有四万吨宇宙尘埃沉降在地球表面。

Floating out there between planets and galaxies, this extraterrestrial dust contains tiny pieces of extinguished stars and the building blocks of future celestial bodies.

在行星与星系之间飘浮的这片宇宙尘埃中，包含了已熄灭恒星的微小碎片以及未来天体构成的基础物质。

And-as in that Milky Way example-that cosmic dust absorbs the light of stars behind it, making it harder for us to see those stars with instruments like the Hubble Space Telescope.

而且，就和银河系的例子一样，宇宙尘埃吸收了它背后恒星的光，使我们很难用哈勃空间望远镜等仪器看到这些恒星。