Let’s talk about “Vacuum Thrust”. Simply put, thrust that is exerted in a vacuum. Space is a vaccum correct? So therefore there is no matter is space, it is just empty space. Thrust is measure in pounds or kgs. So basically an engine that is producing a thrust pushing force of 200 pounds means that it is exerting an opposite force of the same weight.
Now I’m no Einstein but “every action has an opposite and equal reaction”. Once a space shuttle, or rocket is propelled into space let’s say it docks with the ISS for supply transfer or fuel. (I only added the stop so there are no arguments that the said object already had forward momentum and that is how it is propelled forward). Fuel docking or equipment transfer complete! Great! Now we head back home or move on to next destination. How? For thrust to work you need an opposite reaction pushing against the object to achieve movement. But space is a vaccum? Empty space with no matter? If you accidentally went spiraling through space in a space suit and started flailing your arms and legs around hoping to stop yourself, you’d better just hope a little more.
So how is it possible for the propulsion of “rockets” “spacecraft” through space if there is no matter to push against? I guess thrust is a picky choosy thing and wants to defy Newton’s laws lol.
P. S. Again, the point of my questions aren’t to get other theories. The point of my question is to point out that all we can go by are “theories” and “educated guesses”. The speed of sound at sea level is 700+ because it has been measured and proven to be at that speed. And if I am wrong in any of my question in question lol I am a young mind and would love to be corrected!