I have a question for you. Has someone already come up with the theorem for time differential (I think that is the proper word) on a Galactic scale?
If so, please tell me where I can find information on it.
What I mean is the different states of time (mass(+/-)+/-speed(+/-)=time) in relationship to different regions and locations in the Milky Way Galaxy.
Also, I don't think space travel between the stars is going to our main problem. I think navigation is because when you travel from star system to start system, you will lose all points of reference, including time itself in relationship to where you were. Also, your star charts will become all but useless.
No problem. All pulsar locations in the galaxy will be stored in the ship's computer, and at any moment the ship can use their signals as navigational beacons. It will be no more complicated than zooming around on a computerized roadmap. So if it's navigation that worries you, relax. Start working on the propulsion system; that's where the real challenges are.
Great! Explain it to the rest of us; the last three paragraphs made zero sense to me.
I have a question for you. Has someone already come up with the theorem for time differential (I think that is the proper word) on a Galactic scale?
What I mean is the different states of time (mass(+/-)+/-speed(+/-)=time) in relationship to different regions and locations in the Milky Way Galaxy.
There is. It's called gravitational time dilation. Time moves more slowly by a very tiny fraction near the center of the galaxy than it does in the outskirts.
What you are looking for, however, is a big difference in the flow of time, but we can rule that out. For one thing, orbits that pass through such different regions would be unstable, and this is not observed. For another thing, a large difference in time rates (as measured by a difference in the relative speed of light from one region to the other) would result in a large index of refraction, and this also is not observed.
We do see a small index of refraction around gravitating bodies, caused by the gravitational time dilation I mentioned. This was first measured by Eddington, when he measured the displacements of star positions during an eclipse in 1919. We also observe it at cosmological distances, with the phenomenon of gravitational lensing.