Long ago, many centuries after Mars had been fully Terraformed, Earth went dark on the same day all existing electronics on Mars stopped working. All ships not in orbit fell from the sky. Mars quickly descended into chaos as society collapsed, bringing on a new Dark Age. Most of the population succumbed to famine as governments broke down and nations fractured. Around 1000 years later humanity is recovering and has entered a new Medieval Era, largely forgetting the accurate history of humanity and the disaster. No one knows if Earth is still around and is thought of as more of a holy icon and legend. Some ideologies reject the concept or existence of Earth as we know it.