The galactic core is a truly vast region of space, one within which all the fundamental forces of the universe seem heightened and intensified to sometimes bewildering degrees. The sheer density of stars alone is disorienting and extremely hazardous to those unused to it. Many worlds in the core never experience the true darkness of night or are perpetually bombarded by a wide spectra of exotic — and often extremely dangerous — radiation. Due to strange interactions between stellar bodies, dense particulate belts and titanic electromagnetic anomalies, there are regions in which the gravitic pull of comparatively small moons and planetoids is immensely magnified. Dense asteroid belts thousands of miles across; ravenous black holes: polarised, vitrified and even sentient nebulae; enigmatic and frightening greystars; these and countless other phenomena endanger any daring the core.
—Warhammer 40,000, Codex: Leagues of Votann
