Bacterian Home Galaxy
The Bacterian Home Galaxy (BHG) is an elliptically looped shaped satellite galaxy of the Milky Way Galaxy. The main cluster is roughly 10,000 light-years in diameter, and is currently traveling in a polar orbit at a distance of about 50,000 light-years from the core of the Milky Way (about 1/3 the distance of the Large Magellanic Cloud).
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Name
The galaxy, also previously known by Humans as the Sagittarius Dwarf Elliptical Galaxy (SagDEG), is the home of several galactic civilizations. Of these, the Bacterians are the most well known, which is why the galaxy is frequently referred to as the Bacterian Home Galaxy.
The galaxy should not be confused with the Sagittarius Dwarf Irregular Galaxy (Sag DIG), a small galaxy over 3 million light-years distant.
History
One of the closest companion galaxies to the Milky Way, the Bacterian Home Galaxy appears to be an older galaxy, with little interstellar dust and composed largely of Population II stars, older and metal-poor compared to the Milky Way.
What little knowledge exists has mostly been pieced together from Bacterian folklore. The Vobyscum Fragments remain one of the primary sources for names, details and other information regarding this mysterious area of space.
Civilizations
At least four major civilizations exist in the Bacterian Home Galaxy. These are:
Locations
The BHG has several globular clusters with one, M54, apparently residing at its core.
The galaxy is also the location of the Sagittarius Gate, a powerful wormhole-like gate connecting the region with the Milky Way Galaxy at large.
Located close to the Gamma Quadrant, it is believed the Bacterian Empire maintains a strong presence in this dwarf galaxy. It is possible the Sagittarius dwarf is the location of hidden Bacterian staging grounds, resource stockpiles and fleet yards; population centers are also a possibility.
Orbit and gravitational interaction with the Milky Way
Based on its current trajectory, the BHG main cluster is poised to pass through the galactic disc of the Milky Way within the next hundred million years, while the extended looped shaped ellipse is actually even now extended around and through our local space and on through the Milky Way galactic disc in process of slowly being absorbed into the larger galaxy, calculated at 10,000 times the mass of BHG.
The exact history and future of the Bacterian Home Galaxy are very much under debate as the discoveries that continue to pour in are causing the necessary rewriting of all earlier theories faster than anticipated.
The BHG still has coherence as a dispersed elongated ellipse, and appears to move in a roughly polar orbit around the Milky Way as close as 50,000 light-years from the galactic core. Although it may have begun as a ball of stars before falling towards the Milky Way, the BHG is now being torn apart by immense tidal forces over hundreds of millions of years. Numerical simulations suggest that stars ripped out from the dwarf would be spread out in a long stellar stream along its path, which were subsequently detected. This is known as the Sagittarius Tidal Stream.
However, some astronomers contend that the BHG has been in orbit around the Milky Way for some billions of years, and has already orbited it around ten times. Its ability to retain some coherence despite such strains would indicate an unusually high concentration of dark matter within that galaxy.
On the other hand, others note the similarity of star types between the BHG and the Large Magellanic Cloud, arguing that it has recently gone into orbit about our galaxy having somehow become detached.
