流星雨是地球在绕太阳运行的轨道上穿过微粒和尘埃团时产生的。
Meteor showers occur when Earth orbits through clouds of particles and dust on its path around the sun.
北极光的出现是，当太阳发射出带电的微粒子飞越地球时所产生的光线。
The ribbons stretch from one end of the Northern Lights appear when the sun sends charged particles flying toward Earth.
从陨石推断和经过电脑软件确认可行,行星的形成过程应该如此.首先,灰尘微粒聚集在一起形成宇宙尘球.早期太阳的热量爆发将这些尘球熔化,它们因此固化为陨石球粒.
First, dust particles clumped together to form cosmic dustballs. Bursts of heat from the primitive sun melted the dustballs, which solidified into chondrules.
即使是一台放置在围绕地球的轨道上的望远镜——如非常成功的哈勃望远镜——也因为太阳系中的尘埃微粒而无法胜任。
Even a telescope in orbit round the earth, like the very successful Hubble telescope, would not be suitable because of the dust particles iron solar system.
当火山喷发出的二氧化硫到达平流层，就会在那里形成硫酸微粒，可以把太阳光线反射回太空。
Volcanoes inject sulphur dioxide into the stratosphere, where it eventually forms small particles of sulphate that reflect sunlight back into space.
这些大气微粒通过两种途径作用于冰川：首先，悬浮在空气中的微粒吸收太阳光，升高周围空气温度。
These particulates can melt ice in two ways. First, floating in the air, they absorb sunlight and heat the surrounding atmosphere.
宇宙飞船中的宇航员，在距地球大气层很远的上方飞行，完全处于黑暗的宇宙中，因为没有尘埃微粒或小水汽滴去反射太阳的光线。
Astronauts in a spaceship, traveling far above the atmosphere of the earth, are in totally dark space because there are no dust particles or droplets of moisture to reflect the rays of the sun.
造成散射，白天来自太阳的可见光被空气分子和其他微粒反射这会令来自其他恒星的光完全被淹没无法观测。
Distracting at day, visible light from the sun bounces off of air molecules, and other small particles and completely overwhelms the light from any other star you might want to look at.
即使是一台放置在围绕地球的轨道上的望远镜——如非常成功的哈勃望远镜——也因为太阳系中的尘埃微粒而无法胜任。
Even a telescope in orbit round the earth, like the very successful Hubble telescope, would not be suitable because of the dust particles in our solar system.
然而，所有这些东西，看上去虽不同，但却有一个共同点，它们全都由微粒构成的，包括地球上、月球上、太阳及所有恒星中的物质。
Yet all these things, different as they seem, have one thing in common. All of them are made up of small particles. Even the earth, the moon, the sun, and all stars are no exceptions.
水蒸气及灰尘微粒也起到反射太阳光的作用。
The water vapor and dust particles also serve to reflect the rays of the sun.
水蒸气及灰尘微粒也起到反射太阳光的作用。
The water vapor and dust particles also serve to reflect the rays of the sun.
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