Änderungen
→U: - englisch: Diversity = Mannigfaltigkeit
* [[UESPA]] - '''U'''nited '''E'''arth '''S'''pace '''P'''robe '''A'''gency
* [[UFP]] - '''U'''nited '''F'''ederation of '''P'''lanets
* [[UMUK]] - '''U'''nendliche '''M'''öglichkeiten annigfaltigkeit in '''u'''nendlicher '''K'''ombination
* [[USS]] - '''U'''nited '''S'''tar '''S'''hip
* [[UPN]] - '''U'''nited '''P'''aramount '''N'''etwork