The Dark Age of Technology, formally referred to by Imperial scholars simply as the Age of Technology, was the zenith of Mankind's scientific knowledge and technological power in the Milky Way Galaxy, which lasted from the 15th Millennium A.D. until the onset of the Age of Strife in the 25th Millennium. It saw the development of the first true human interstellar civilisation and the birth of a united human stellar confederation centred on the human homeworld of Terra. Even tens of millennia later, Mankind has not been able to equal or regain its former height of achievement attained in this era. This age occurred long before the current Age of the Imperium and knowledge of this time period is now incredibly sparse, and many "facts" about it are no more than legend.