When building a remote outpost, it’s usually a good idea to stay away from active fault lines. Fortunately for people planning human habitation on the moon, it’s long seemed that our tiny natural satellite is a geologically dead world. After all, you need internal heat for tectonic activity, and small rocky worlds like the moon are thought to cool much more rapidly than larger ones like Earth.

But now, fresh analysis of Apollo-era data suggests that the moon is actually more tectonically active than previously presumed.

Read more at National Geographic.