Part 9: The spacetime

To be able to explain the up to 7-times faster than light speed with which the farthest, visible objects move according to the redshift, the spacetime introduced by Albert Einstein, was released from the speed of light and all other physical laws.
This creates an infinite but not limitless universe and does not allow clear distinction between spacetime and nothing.
Thus, the transition from spacetime into nothingness is fluent .
Would you take an imaginary flight with a spaceship  from spacetime into nothingness, you would not even notice that you are in nothing.
But then the question arises :
Is spacetime identical with nothing?
And vice versa : Is this nothing then the same as space-time ?
In a real universe such a trip is hard to imagine ...