From the Casimir effect, we know that when two plates are placed very close to each other in a vacuum, they attract each other because the 'pressure' of the quantum fluctuations that press on the two plates' outer surfaces outweigh the quantum fluctuations on the inner surfaces.
Imagine two celestial bodies in a deep space.
The closer they get, the more the quantum fluctuations in between them get outweighed by quantum fluctuations not in between them.
Is gravity a partial product of the Casimir effect? Thus, is gravity the partial macro effect of electromagnetism/quantum fluctuations?