You poor bastards.
Just listen to yourselves...
Trying to outwit both Newton & Kelvin in order to make Something Push on Nothing.
Sad stuff.
Fucking hell man, THE ROCKET DOESN'T PUSH ON "NOTHING", IT PUSHES ON THE FUEL!!! Just try to put this in your tiny mind and comprehend it!
How can it push on the fuel. Explain how it manages to push on the fuel to make it move. Don't just say it shoots mass out the back end and just moves. Explain why. Try and do it without a big kiddified rant about my mother or whatever.
Explain how you can push anything. What do you mean? Because the fuel ignites, expands, collides with the walls of the interior of the rocket, and is then shot back.
If the fuel expands, then would you agree that it would squash against the sides of the rocket and then be squeezed out through the nozzle?
And if that's the case - in your space - wouldn't that fuel then expand further - or freely - or close to freely - expand into the extreme low pressure environment of so called space, meaning it cannot cause any push back to force the rocket the other way. It could only compress due to expansion until it hits the nozzle and then it's dispersed freely, or almost freely into so called space.
There cannot be any motion in the opposite direction due to this, almost free expansion.
Your trouble is, you believe matter just freely collides like a person kicking a football at a wall. It's a massive mistake a lot of you make.
You make this mistake because you refuse to learn the truth.