Joseon Galaxy

Overview
The Joseon Galaxy is a large lenticular galaxy located at the center of the Ruby Galaxy Cluster, and is among the largest known galaxies. Surveys conducted in the late 2990s estimate the size of the galaxy to be roughly 150 kpc (kiloparsec) or about 490,000 lightyears, across. The distance from Joseon to Earth, the home world of the United Federation, is unclear, but thought to be over 100 million lightyears At the center of the galaxy lies an ultramassive black hole thought by astronomers to comprise several billion solar masses.

Joseon is an older galaxy, estimated to be about 11 billion years old, and is thought to be among the first galaxies formed after the Big Bang. Few stars are produced and the galaxy lacks much of its interstellar matter - dust, cosmic rays, gas, etc. - which is common for a lenticular galaxy such as itself. Most stars in Joseon are rich in minerals, which give the galaxy its golden yellow color.