:...Distance is measured differently to an object with velocity relative to a reference, why? Time dilation is always preasent with space shortneing, why? Can anybody say why, not how?

It is because the laws of physics are frame covariant and the Lorenz speed is finite. That's why Lorenz group transformations must be used in the case of no acceleration and flat space-time. But I can also say how also.

: : Great, mass curves space-time and causes gravity, WHY? ...Sure, mass causes gravity (obviously), but why? Not how much, not the effect it seems to have on space-time, why it causes this effect?

String theory answers why mass-gravitation are a necessary part of the physics of string interaction though I can't explain it well enough to justify trying because its not my field. In a correspondence limit this results in a curvature of space-time in the presence of mass. But I can say hoe much as well.

• http://hometown.aol.com//zephcochrane/WarpDrives.html