The Five Galaxies was a term coined by a Radnian Emperor to describe the physical boundaries of the Radnian Empire.

The birthplace of the Radnian Empire. The early Terran name for this galaxy was the Milky Way.

Named the Small Magellanic Cloud or SMC by the Terrans. Baxel was the first galaxy beyond Estra to be explored and conquered by the Radnian Empire.

This dwarf galaxy was the second outer galaxy to be explored by the Radnians and it was considered the third of the five galaxies. Ursa Major II was the Terran title for this celestial body.