- last post: 01.01.0001 12:00 AM PDT
In theory, (in real life) it is theorised that space in between galaxies is much too turbulant for us to travle through (something a bout the gravity of all those galaxies tuging on objects). Plus the distance between galaxies is so large that even with slipspace, it would take a couple of hundred of years to travle to another galaxy. And I doubt even the covenent have developed the technology to travel to other galaxies.
In the books it mentions that humans have only explored a small portion of our galaxy.
So all in all the setting of the Halo story takes place entirely in our own galaxy.