Salaam,
It is not like I dismiss things outright, but it sounds too absurd to be true.
Even if some of the space ambitions are part of a political game you have lots of independent and private activity regarding space research as well.
And theoretically you would be able to launch a projectile from the Earth and it would be forced by the gravity of another planet to change heading because it is affected by its gravity. It depends on the speed and mass of the projectile but the vessels we have are relatively slow in comparison. And if within the gravity of a planet then its engines are effective.
You also forget that the star of this solar system has its own huge gravity field which causes all the planets to stay in orbit around it. A powerful enough engine, not those we have now, but such as in science-fiction and scientific theories today, could deliver thrust even if the gravity is low. Engines we have are highly dependent on gravity because they are reaction-engines.
Even if space is a huge vacuum as long as you have any form of contact with gravity you have propulsion potential.
And concerning satellite technology it looks like people do not understand it. Even Iran has sent its own satellite into the atmosphere. You can place a satellite dish in some remote area and it will still work. It does not receive a signal from the Earth and if there is spacial disturbance then the signal quality may be adversely affected.
And what about space observatories? What are they seeing? An illusion?
How about all studies about our neighboring planets Venus, Mars? Are they revolving around the Earth just like the Sun?
Despite the size of the sun it is what revolves around the Earth and not the Earth around the Sun?
It sounds amazing if all that we have experienced concerning space was just a hoax. All private research, private companies spending billions, just an illusion created by man.
But despite this the Earth is not flat but round because that can easily be empirically tested.
Salaam
Sounds too absurd because it goes against what we've been taught right?
So you're saying thrust would work just because there's gravity? What would be the thrust against? Still vaccuum space right? So what would give it the push it needs to propel forward?
If you stand before a wall and push with your hand you will move backward because the wall has a great resistance. If you are swimming you have to push harder because liquids don't have the same amount of resistance. If you are flying you need an even greater push because air resistance is even weaker. And when you are in space there is NO resistance, so what exactly would a thrust do?