Your question is interesting... Only those can give you relevant answer who sent a spaceship in 'nul' gravitational space. Our ( as mass) knowlege about the mentioned area is similar with knowlege of atomic bomb... I am writting an article about graviton where used an metaphisicall aproximation...
No one from Spacecraft Centre will answer your question, As long as you are not a member of one of the centres.
You must seek the answer in yourself, do not trust in anything.Nature itself will give you the answer.