Precursors

The Milky Way is 13.5 billion years old. In that time, countless species have developed sentience and culture and many have achieved faster than light travel, allowing the conquest of space. Over the course of millennia, these elder races have gone extinct, missing, or changed entirely.

The passage of eons has eroded or erased evidence of most of these ancient races and empires, though some artifacts remain.

Known precursor species
Kreegan - Massive beings with impossibly advanced technology that ruled the region of space including Sol for a period over 800 million years ago.