Where did the Moon come from?!

Giant-Impact Hypothesis.
•	Earth gets a “beat-down.”
•	Pieces of Earth Form Moon.

Moon Gravity.
•	1/6 gravity of Earth.
•	Weight = Force of Gravity.

Lunar Surface.
•	Highlands
–	Light color
–	Oldest part
Lunar Surface
•	No air 
•	No water
•	No weathering, erosion by air & water.
Craters
•	Hole in surface
•	Impact!
•	Compression
•	Rebound
•	Ejecta