Flat Earth Society

Have you ever heard of Flat Earth theory?

Well, the story goes like this: The Earth is not a globe-it is flat. The governments of all countries of the worlds have conspired together with all the scientists and they are lying the whole population of the world in order to keep them in slavery and to extract financial benefit. The Earth map is not the Mercator projection as we are used to, but a UN logo instead.

These are the evidence the "flatearthers" present:

There is no curvature and there is no evidence of any curvature. No matter how high you fly, the horizon is always at eye level. Also, they claim, there are many experiments which prove you can see objects hundreds of miles away which you are not suppose to see.
Antarctica does not exist! Actually, it exists not as a continent, but as a ring of ice that surrounds flat Earth disk and prevents the ocean spilling into the space.
Sun and Moon are not spheres, but also reflector like disks that emit their own lights to the Earth surface. Also they do not rise and set, but move around the surface in circular motion.
There are no flights between South America and South Africa, South America and Australia, and Australia and South Africa. Even if they exist they are faked. They explain this by existence of ludicrous multi-stop flights which are cheaper than non-stop flights between these destinations. They also claim that the airplane should constantly dip the nose down if the Earth was a sphere, otherwise it would end up flying in space.

The natural physics of water is to maintain its level. If Earth were a giant spinning ball hurling through space then truly flat, consistently level surfaces would not exist here. There would be a massive bulge of water in the oceans because of the curvature of the earth. If earth was curved and spinning the oceans of water would be flowing down to level and covering land. Some rivers would be impossibly flowing uphill.
The sun is much closer than we have been told. It is, in fact, in our atmosphere. You can clearly see that it is not 93 million miles away. Many times you can see the sun's rays shooting out of a cloud forming a triangle. If you follow the rays to their source it will always lead to a place above the clouds. If the sun was truly millions of miles away, all the rays would come in at a straight angle. Also the sun can be seen directly above clouds in some balloon photos, creating a hot spot on the clouds below it and in other photos you can clearly see the clouds dispersing directly underneath the close small sun.
If we were living on a giant sphere, moving through space thousands of miles per seconds, rotation around the Sun, rotating around its axis 30km/s, wouldn't we be able to feel this motion?
The gravity does not exist. It is just another way for buoyancy. If “gravity” is really a force strong enough to hold the world’s oceans, buildings, people and atmosphere stuck to the surface of a spinning ball, then it is impossible for “gravity” to also simultaneously be weak enough to allow little birds, bugs, and planes to take-off and travel freely unabated in any direction.
And as a final fact: