Regardless of people believing in gravity, which is false (in my opinion)...these planes that take people up to experience zero gravity are not doing any such thing if you think about it.
All you are doing is falling slower than the plane is descending. I think anyone with a bit of thought can see this.
A simple scenario would be like dropping a coin then then dropping your hand under that coin a little bit quicker than the coin itself.
We have all done this with a ball, coin or many other implements. Either catch the coin hard, as in, you throw up the coin and allow the coin to slam back into your static palm, or - if you want a sort of soft catch where the coin sort of floats into your hand, you follow the coin down with your hand slightly under it and moving a tiny bit faster.
If that coin was a human, that human would feel like they were floating as they would simply see the palm of the hand always just slightly under them, giving the illusion of floating when in fact all you are doing is dropping like a stone with something that is dropping slightly faster.
Not zero gravity is it?
Now let's equate that to what we are told about orbits in space and actually in space itself, away from Earth as we are told.
We are told that astronauts on the ISS fall AROUND the Earth in space orbit and this gives them a zero gravity environment.... That makes no sense.
What would make sense would be for them to be falling to Earth (assuming it was real, which it isn't) and then the astronauts would feel a sense of weightlessness....BUT... the ISS would then have to do what the plane does and keep dropping under power and rising under power, yet we are told that the ISS just falls round the Earth and only every now and again does it use a bit of power to speed up; yet the weird part is (if anyone would like to view a video of it supposedly speeding up) the astronauts actually move horizontally backwards whilst this supposed action is being performed.... Are you lost?
Take a look at Cady Coleman in the clip where she was giving a supposed interview inside the ISS. She could not keep still. She was either floating up to the roof and had to stop herself (it's comical to watch) and yet a little boost of the station in anotehr video and the astronauts move horizontally from a standing (or should I say, floating) start. It's ridiculous.
Not only that; we also see astronauts supposedly on their way to the moon inside the Apollo command modules... and remember, they are not orbiting at this time, yet we see them floating around in the capsule.... Why? Why would they float?
They are inside a cabin full of air pressure and are not orbiting anything in terms of falling as they go around the moon or Earth, so why in the hell would they float?