However, some larger asteroids do make it through the atmosphere and impact our planet's surface.

然而，一些较大的小行星确实能穿过大气层，撞击我们的行星的表面。

" When Pluto was forming, new material would have been coming in and impacting its surface, " Bierson said.

" 冥王星形成时，新的物质会进入并冲击其表面。

In a few million years, it's expected to drop low enough to actually enter the atmosphere and impact the surface.

预计在几百万年后，它将下降到足够低的高度，以至于进入火星大气层，撞击火星地表。

So when a 10-kilometer diameter asteroid enters through the atmosphere and impacts the surface of the earth, you have to realize that 10-kilometer object is comparable to the size, the height scale of the atmosphere itself.

当一颗直径10千米的小行星，进入大气层，并且撞击到地球表面时，你得知道那个10千米的物体在尺寸上基本与大气层本身的高度相当。

The glass with a higher length-to-diameter ratio was formed under lower temperatures and speed when a meteorite impacted the lunar surface, reflecting milder impact events compared with the formation of glass beads which have a lower length-to-diameter ratio.

陨石撞击月球表面时，在较低的温度和速度下形成了长径比较高的天然玻璃纤维，与具有较低长径比的玻璃珠的形成相比，这反映了月球表面较为温和的微撞击事件。