Delta Quadrant

The Delta quadrant is 30, 000 light-years from Earth. The Crux Arm Galaxy is located within this.

Around 1937, Humans were first planted in this sector by a race known as the Briori as slave labor. The slaves rebelled and built a new civilization. This region was visited by the USS Raven when they followed a Bog vessel through a transwarp conduit.

The first Starfleet Mission into the Delta Quadrant occurred during an inspection of the Barzan Wormhole in 2366.

Due to the immense distance between the two quadrants, an Intrepid Starship would take 30 years at Maximum Warp, the Federation knew very little of this quadrant of space.  That is, until 2371, when The Starship Voyager, was pulled into this quadrant by the Caretaker.

Beta Quadrant

The Bata Quadrant is one quarter of the Milky Way. Klingon and Romulin Star systems are in the Beta Quadrant. The Federation also claimed a portion of this. in 2293 The Excelsior completed its three year mission to categorize what is in the quadrant. They found gaseous anomalies.

Alpha Quadrant

The Alpha Quadrant is one quarter of the Milky Way. 25% of the quadrant has been explored. It contains such beauty and scientific wonders. Interstellar politics were dominated by the Federation.