The Age of Exploration was an ancient era where humanity began to leave it's cradle, the Solar System, and began exploring and conquering across the galaxy. When and how it began is uncertain, however it is known that it likely started with the invention of the Star Engine, required for any ship to travel at the speed of light. It most likely occured thousands of years before the Great Scourging, at a time when humanity's ambitions and curiosity could not be contained.