Plasmas can be extraterrestrial.Logical formLearned from2 sentences. A calibration can be extraterrestrial.Logical formLearned from2 sentences. Methods can be appropriate for a detection of extraterrestrial life.Logical formLearned from2 sentences. A worshipping can be extraterrestrial.Logical formLearned from2 sentences. Companions can be extraterrestrial.Logical formLearned from2 sentences. Gold can be extraterrestrial.Logical formLearned from2 sentences. An option can be extraterrestrial.Logical formLearned from2 sentences. Persons may discover extraterrestrial intelligence.Logical formLearned from2 sentences. (Radio searches) can be for extraterrestrial intelligence.Logical formLearned from2 sentences. An assay can be extraterrestrial.Logical formLearned from2 sentences. A chemistry can be extraterrestrial.Logical formLearned from2 sentences. A flash can be extraterrestrial.Logical formLearned from2 sentences. Remains of an extraterrestrial spacecraft may be involved.Logical formLearned from2 sentences. Artifacts of an extraterrestrial civilization may fall into a category.Logical formLearned from2 sentences. Intelligence can be an extraterrestrial civilization.Logical formLearned from2 sentences.