I have a kinda shallow understanding in energy and gravity and stuff, so maybe in my post, I affirmed something that isn't true or I forgot something
Alrightt so imaging we have
-object A (which has a huge mass) and
-object B (which has a little mass)
So to my understanding, object A will pull object B towards it, if object B is close enough, because of object A's gravity. And this gives the object B energy, right?
where does that energy come from? if we follow the law of conservation of energy, then we know that energy cannot be created or destroyed
I saw some articles about the same question, that uses an example of dropping a ball from some height
the ball will be attracted to earth, thus gaining energy from earth's gravity
but when lifting the ball, we give potential energy to earth's gravity, and when we drop the ball, the energy we transfered to earth (by lifting) will transfer to the ball
My question is a similar one, but this time we aren't actually lifting anything (which transfers energy to object A). Instead, object A and B just randomly come across into space and then start to attract eachother.
so my question is where does that energy (the energy that object A gave to object B, using its gravity) come from?