Gamma Arigulon II was a planet where trace radiation anomalies were detected in the 24th century.

The anomalies were in the Gamma Arigulon star system and were reported by the USS LaSalle. The United Federation of Planets, Romulan Star Empire and Klingon Empire all took interest in the possible anomaly. The anomaly eventually did appear as a blue-colored shockwave. (TNG episode: "Reunion", CCG Premiere card: "Investigate Anomaly")

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