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This term refers to aliens who have left behind physical evidence of themselves. Knowledge of such beings dates back to the discovery of the alien ship on Europa in 2132. At various times this knowledge has had a significant impact on humanity. Everything from the paranoia after the loss of the Santa Maria that helped drive humanity into The Long Night to the discovery of Terra/Sol.

Most of humanity believes that extant aliens are “out there” somewhere. Some anxiously await the day when first contact is made while others dread it.