Could he, even in the mid-seventeenth century, have derived the Lorentz transformations, the existence of a fundamental limiting velocity ... Could special relativity have been developed, even ...

The velocity of an aether would pick out one direction, and so violate this principle; hence, an aether with a definite velocity cannot be consistent with relativity. But quantum theory ...

Physicists Andrzej Dragan and Artur Ekert have made strides in this area, proposing that extending Einstein’s special relativity ... regardless of their velocity relative to light.