system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: How can you protect a base on the moon from meteor impacts?
gpt
Pile lots of dirt on top of it.

You'd probably need to anyway to reduce exposure to cosmic radiation, and to stabilise the temperature. There aren't many large rocks left around - at least, not compared to a few billion years ago, and ten metres of bulldozed regolith would probably soak up all but the really rare big stuff.