The Three Sisters and the Hazral Sphere
Space is eternal, with vast reaches of nothingness between galaxies. At least, usually. For reasons that not even the most advanced scientists in the universe can explain, a great mass was formed during a major catastrophic cosmic event of some kind in empty space. The force of gravity around this unknown entity, formed hundreds of billions of years ago, drew together the entirety of three separate young galaxies, each with only the barest beginnings of intelligent life sprouting in their solar systems. This force, known as the Hazral Sphere, has sustained to this day, and since then the galaxies of Perga, Veata, and Tarni, known collectively as “The Three Sisters”, have orbited it.
As there were no races in existence today in any of the three galaxies, there is no record whatsoever of what happened or how. Modern scientists have attempted to scan, observe, and record data regarding the Hazral Sphere, but even the most advanced technology cannot detect the energy source that allows it to hold the Three Sisters in such perfect orbit, nor can any expeditions to garner better readings and observation be made safely, as the amount of pressure in the atmosphere around the sphere would be too much for even the best and biggest starship.
While researchers continue to attempt to pinpoint what precisely has led to this unusual binding of three galaxies with fervor, most have simply accepted that it is a cosmic anomaly comparable to a black hole, and live their lives as usual, thankful that travel between the Three Sisters is made much easier by their proximity to each other. Humans, especially, have expressed a particular fondness for the closeness of the three galaxies, as to even reach this part of the universe, they reportedly had to essentially slingshot themselves around a planet into void space and survive many generations before they arrived. Now, a trip to the next galaxy over can be as quick as six months, though it depends greatly on where the traveler is going and the type of ship being used.