Assuming that gravity as a force exists at all. I cannot stand such assumptions. We know nothing about gravity, even the top scientists themselves admit it, so why talk about the invisible dragon in someone's garage in the first place?

IMO gravity is not a force after all. It's just a physical effect caused by something that is yet to be known. I have constructed a simple computer simulation where gravity is caused by the equal and simultaneous expansion of all the atomic particles in the universe. Credits go to my brother though since he saw this concept in his dreams.

Here's my simulation:
https://www.youtube.com/watch?v=W2opz-6HWro

And interestingly here's someone else's simulation of the very same concept:
https://www.youtube.com/watch?v=QboDTgped1E