Moon dirt is full of glass particles from micrometeorite impacts.

月球土壤中充满了石撞击产生玻璃颗粒。

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

哦是，那只是，你知道，一个生物石，你知道，可能进入大气层。一块碎片进入大气层。

Each new micrometeorite is its own mystery.

- 每个新石都有其自身奥秘。

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

们显然不会找到任何大，但小石， 它们实际上无处不在。

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

存在于能想到每一种石和石中。

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

所以是一颗石。

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

们得到了一位业余科学家帮助，他证明可以找到石。

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

关于石实际是什么样子数据并不多。

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

意味着 3500 颗石年复一年地撞击它。

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

乔恩估计大约 80% 石是金属，因此们将重点关注些。

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

高墙也有助于防止石被风带走。

So a key technology we need as a space station company is the ability to handle micrometeorite strike that might happen.

因此，作为一家空间站公司，们需要掌握关键技术之一是应对可能发生流星体撞击能力。

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

因此， 在第一年内，发现了 500 种不同石。

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

石非常小，一次只能聚焦一个很小横截面。

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

- 其他人认为石来自太阳系更远地方。

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.

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

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

乔恩下一步是试图找出宇宙中所有些石来源。

So there's this process called gardening, which is just the micrometeorite, constant rain of micrometeorites.

所以有个过程称为园艺，它就是石，不断石雨。

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， 由于没有类似地球大气层或磁场来排斥太阳辐射和石，太空殖民者可能需要在些地外定居点屋顶上堆放数米厚岩石和地质碎石。

We're just working on a paper where we just calculated, this was super fun, we calculated how long would the Lunar Lander exist on the moon before micrometeorites just chewed it down, right?

们正在撰写一篇论文，们在论文中计算了登月舱在月球上能存在多久才会被流星体完全侵蚀掉，真很有趣。