I don't know, why don't you test it out? Try walking off a cliff and see what happens. If you don't fall to the ground, then gravity must be a myth. Otherwise, you will be feeling the effects of gravity the hard way.
Gravity exists because mass exists.
Gravity exists everywhere that mass exists, so the answer is yes.
You go to Alberta and find Steve, and Steve will help you prove it exists... Hes super cool
Gravity is a force that pulls two objects together. Gravity exists between two objects that have mass. Gravity exists in the whole universe
Isaac Newton discovered gravity.
Gravity does not occur in mudslides. Gravity exists wherever there is mass.
light a match
People have so many definitions of God so it is hard to prove that God exists. A religious experience may make a believer of you but it may not "prove" God exists as your experience may not convince a non-believer.
Galileo
The force of gravity exists all across the Earth's surface.
Gallo
Your question is ambiguous. Are you asking why gravity exists or is gravity or more to the point can Gravity/Magnetism be used as an energy source.