Moon dirt is full of glass particles from micrometeorite impacts.

月球土壤中充满了撞击产生的玻璃颗粒。

Oh yeah, that's just, you know, a micrometeorite, you know, probably entering the atmosphere, a piece of debris entering the atmosphere.

哦是的，那只是，的，一个生物，的，可进入大气层。一块碎片进入大气层。

So, within the first year, I had found 500 different micrometeorites.

因此， 在第一年内，我发现了 500 种不同的。

So this is almost pretty much nails this as being a micrometeorite.

所以这几乎是一颗。

This is in almost every kind of meteorite and micrometeorite I can think of.

这几乎存在于我想到的每一种和中。

We're obviously not going to find anything big, but tiny micrometeorites, they're actually everywhere.

我们显然不会找到任何大的，但小的， 它们实际上无处不在。

Each new micrometeorite is its own mystery.

- 每个新的都有其自身的奥秘。

We enlisted the help of the amateur scientist who proved that micrometeorites could be found.

我们得到了一位业余科学家的帮助，他证明可以找到。

A micrometeorite is so small that you can only keep a tiny cross section in focus at a time.

非常小，一次只聚焦一个很小的横截面。

Others think the micrometeorites come from much further out in the solar system.

- 其他人认为来自太阳系更远的地方。

There wasn't a lot of data out there about what micrometeorites actually looked like.

关于实际是什么样子的数据并不多。

Jon's next steps are trying to figure out where in the universe all of these micrometeorites came from.

乔恩的下一步是试图找出宇宙中所有这些的来源。

Which means 3500 micrometeorites hit it year, after year, after year.

这意味着 3500 颗年复一年地撞击它。

Jon estimates that about 80% of micrometeorites are metallic, so we'll focus on those.

乔恩估计大约 80% 的是金属的，因此我们将重点关注这些。

High walls can also help prevent micrometeorites from being carried away by the wind.

高墙也有助于防止被风带走。

The paper said micrometeorite impact and solar wind irradiation, the dominant space weathering processes, largely modified the composition and microtexture of soil materials on the moon.

撞击和太阳风照射是月球上主要的空间风化过程，在很大程度上改变了月球上土壤物质的组成和结构。

But with no Earth-like atmosphere or magnetic field to repel solar radiation and micrometeorites, space colonists would probably need to pile metres-thick rocks and geological rubble onto the roofs of such off-world settlements.

但是， 由于没有类似地球的大气层或磁场来排斥太阳辐射和，太空殖民者可需要在这些地外定居点的屋顶上堆放数米厚的岩和地质碎。