Space isn't practical. Empty space has never been observed because nothingness cannot exist. You cannot hold space in your hand or experiment on space because nothingness cannot exist.
I'll just have to disagree on that. Let's get back to that vector you mentioned.
The vector is away. As in the opposite direction.
Great. You know the vector. (Aristotle,Newton,Wessel,Argand,Gauss) Where is it pointing?
Are you referring to measurement of the energy transfer due to tidal forces?Actually it is. It's that pesky thing called scientific measurement (laser ranging from Apollo).