Prime Timeline
   | Year | Event | 
   | 2215 | 
         ● [1]
         The planet Selcundi Drema begins to disintegrate, forming an asteroid belt in the solar system. [1]
 | 
   | 2365 | 
         ● [2]
         The Enterprise-D investigates the Selcundi Drema system, where planets appear to have been destroyed by an unknown process. An investigation led by Wesley Crusher - his first command - indicates that this is a result of massive dilithium deposits on the planets. Lieutenant Commander Data establishes communications contact with a native of one of the planets, a young girl, and the crew are able to stabilise her planet and prevent its destruction - in violation of the Prime Directive. [2]
      
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References