Editing Planes of Existence (section)

=== That Which Has Happened (the Past) ===
The Past is a plane of archiving the things that happened in the Material Plane. This is done by the modrons, a race of clockwork beings that are created on the Outer Plane of Mechanus. The modrons break down the time for the past on the Material Plane, archiving it in Mechanus. This archiving takes an incredible amount of time, and thus traveling to the past is only possible for up to 10 or so years. However, the farther back you travel, the more “packed up” the world appears. The Past is also analyzed by the modrons to provide crucial information to the Future to set up continuing projections of events.