Right now we use the force of repulsion to fly through space. It is limited to the fuel one can carry.
What we need to do is learn how to use the force of attraction. Then your power comes from all the matter in the Universe. Think of how the warm and cold air currents meeting create a force we call a tornado. The air currents carry no propulsion system yet they achieve speeds in the 100’s of mph.
A vacuum can crush a metal container, yet the vacuum is not even a material piece of matter. The pressure of the atmosphere is what provides the power source.
Certainly. Anything other than a reaction engine from the 12th century.
Richard Feynman said—
“There is enough energy in a cubic meter of empty space to boil all the oceans of the world.”
Utilize that