For anything to fall, its dense mass must be placed into a higher atmosphere and can be squeezed/pushed against more than the resistance below can stop it.
This is why objects fall faster or slower or float depending on their dense mass against the push back against that dense mass.
Think of each molecule as layers within layers. The more layers the more dense the molecule is.
Let's assume gold. The make-up of gold would be very dense molecular layers making up the nugget or bar or whatever. It is very dense because of this.
It's not very porous and can also displace a lot of atmospheres, allowing little to be part of it.
Then you have water at the other end of the scale. It is made up of varying molecules and minerals but not layered anywhere near the dense mass of gold.
Then you have an atmosphere that can hold even fewer layers at sea level and even less as the stack is built up and all of the differing densities due to the layers inside the molecules which are themselves layers and stacked as a mass all the way to the top.
What it holds and the amount within the stacking system.
Think of this below as a highly dense molecule.
No, imagine one with less layering and so on and so on.
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Now imagine them in a stack with different layers and interlinked as those layers are broken down due to expansion and being crushed up by denser molecules below and around.
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And yes this is a pyramid shape but I could make it much wider and offer the top as layers along the stack instead of the one at the top. This is to offer you the idea and reasoning behind it.
Take from it what you will.
You're looking up at a dome and from an area. You will see many images and not see the reflection because your eyesight just isn't good enough to see that distance.
I've more than given it. What you do with it or take from it is not my cocnern.
Have you ever looked through a window at night with nothing in the background outside of that window? I'm guessing you have.
What do you see?
Do you see what's actually inside of the window, meaning inside of the place you're standing in? It's clear glass, right?
Set against what?