We just learned about Lunar Rocks.
When the astronauts walked on the moon, it wasn't the same as walking here on earth.
The gravity on the moon is a lot less than earth.
That means if you dropped a ball to the ground, it would fall slowly like a balloon!
If you are on the moon and you jump up in the air, you won't come down fast like normal,
you'll float down slowly like a balloon too.
If you weigh 50 pounds on Earth, you would only weigh about 8 pounds on the moon.
(from: wikipedia - buzz aldrin)
Kid Facts - Blast from the past: Planet Mercury