system
Given the following post, respond as if you're commenting on Reddit:
human
If energy is required to have any impact upon the universe, and if gravity has an effect and an infinite range, then where does it get the energy from to do so?

My thought process is such -
1) Gravity has an effect on the universe, and an object passed through a gravitational field gains energy
2) As energy cannot be created or destroyed, obviously this energy comes from gravity
3) As gravity is common to anything with mass, that means everything must be able to provide some energy

Therefore, my assumption from these would be that the energy for this field comes from the mass of the objects itself, as E=MC^2 , and so if you have a mass large enough for a noticeable effect (I.E. Earth) then it has the energy in its mass to provide this field. Is there any validity, sanity or good science to my assumption?
gpt
Caveat to point 1): an object passing through a gravitational field (like slignshot maneuvers), do gain energy, but it is taken from the body, if you slingshot with Jupiter, you actually move jupiter also a teeny bit. There's no energy created, just transferred.