Tanuga IV appears in a Star Trek: The Next Generation episode as the cloudy home planet of the Tanugans, who impose a harsh "guilty until proven innocent" system of criminal justice. Commander Riker was accused of murdering the Tanugan physicist Dr. Nel Apgar. The physicist was experimenting on converting Krieger waves and had hoped to sell his Krieger-wave converter to the enemies of the United Federation of Planets as a weapon. Of course the Federation's interest in the technology had been chiefly as a new power source.


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