What does the current mass of the Moon constrain regarding the energy dynamics of the collision?

Answer

The kinetic energy released was precisely channeled to establish orbital velocity without significant mass loss to space

The Moon's current mass is direct evidence of the precise kinetic energy released, as any significant over-energy would have resulted in the ejecta achieving escape velocity and being lost to space.

What does the current mass of the Moon constrain regarding the energy dynamics of the collision?

#Videos

How Theia, the Planet that Created the Moon, Could Also Be Hiding ...

planetsMoonformationTheiaGiant-impact hypothesis