We just learned about the Lunar Wrinkle Ridges
Let's keep learning about the Moon!
Another thing you can see on the moon looks like a big long ditch.
This is called a Graben.
One of the grabens on the moon is called Rima Ariadaeus:
(from: wikipedia - geology of the moon)
Kid Facts - Blast from the past: First Americans in space - Alan Shepard, John Glenn
