the distances involved just make travel ala Star Trek just too unlikely.
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Star trek does not use a propulsion system, except for slow speed maneuvers. It “folds” space such that both the initial ship position and the destination position move close - how fast the happens is the “warp” speed.
Them there are wormholes seen in Deep Space that make travel from here to there instantaneous.
The there are the 200 field equations by James Clarke Maxwell that postulate instant movement form any one place to an other, free energy and so on. He was read and admired by Einstein and Tesla (who tried to make devices based on Maxwell’s equations, but alas original copies were rare to nonexistent even then, so he might not have had all the information needed.) Footnote: without Maxwell, we would know nothing of the electromagnetic spectrum, Einstein would have remained an obscure postal worker, Tesla an unknown engineer.
Absolutely, and not just space, but time.