The Grand Archives' development began during Earth's establishment of the UEG. They acted as a universal encyclopedia, documenting information ranging from all forms of sciences (biology, physics, chemistry, psychology), to the simulated/theorized-hybrid history of both Earth and a variety of discovered worlds.
The Grand Archives were originally private internal datasets available only to UEG. With the help of Analog, the Grand Archives were made public, causing the collapse of the UEG. Servers hosting the Grand Archives were shut down, but eventually brought back online in a limited but public form through additional efforts made by Analog.