There are between two and four hundred billion stars in the galaxy, and less than 1% of them have ever been visited or had their systems properly surveyed.
Humanity's early expansion into the Attican Traverse was haphazard; a desperate race to claim habitable planets where populations can be economically settled. Ignored in the wake of the land grab were thousands of less hospitable worlds, each potentially rich with industrial resources. The wealth of entire solar systems lies untapped, waiting for corporate survey teams or independent pioneers to discover and exploit them.
This, however, is not an easy task. In addition to the environmental hazards, the fact that uncharted worlds are largely ignored makes them popular bases for criminals, revolutionaries, cults, and others who wish to remain unnoticed by galactic society.
Mass Effect: Infiltrator·The Final Hours of Mass Effect 3·Galactic Codex: Essentials·Mass Effect Galaxy·Revelation·Ascension·Retribution·Redemption·Evolution
Soundtracks
Mass Effect Original Soundtrack·Mass Effect 2 Original Videogame Score [Atmospheric·Combat·Kasumi's Stolen Memory·Overlord·Lair of the Shadow Broker] ·Mass Effect 3 Original Videogame Score [Extended Cut·Citadel·Leviathan] ·Mass Effect: Andromeda - Original Soundtrack