Hi Forum, I am new and have just registered as I have a few quetions I was hoping you may know concerning our moon. At what distance must the moon be from earth for it to no longer have any gravitational effect on the earth? What is the strength of the moons gravitational effect on the earth? and How much weaker would this effect be over say an increased distance of say 10 miles and 100 miles? Please help, I'm no scientist or mathematician so responses in idiots english would be good . (I am doing some research as I am writing my first Fantasy / Sci Fi Novel ) Thanks forum!