Is there a term for a generalization of existential risk that includes the extinction of alien intelligences or the drastic decrease of their potential? Existential risk, that is, the extinction of Earth-originating intelligent life or the drastic decrease of its potential, does not sound nearly as harmful if there are alien civilizations that become sufficiently advanced in place of Earth-originating life. However, an existential risk sounds far more harmful if it compromises all intelligent life in the universe, or if there is no other intelligent life in the universe to begin with. Perhaps this would make physics experiments more concerning than other existential risks, as even if their chance of causing the extincion of Earth-originating life is much smaller than other existential risks, their chance of eliminating all life in the universe may be higher.