Role of physics in landing something on the moon

We were privileged the other day to have a physicist join our discussion. Now for those of you that don't know, I (Jeff June) do not have a clue when it comes to exactly how we will launch our project into space, but I feel I am a little closer (so to speak).


There are are other considerations as well such as:

1. Do you want to orbit the moon or slam right into it.
2. At what point do you leave the gravitational pull of the earth and enter the gravitational pull of the moon.
3. How does the gravitational field of either the Earth or Moon, help or hinder the efforts.
   

The above are a few ideas we are kicking around.

As always, your participation is in this topic and all others consider here are always welcome.