extrasolar
adjective
                                                                                                                            
                                                            ex·tra·so·lar
                    
                                                                                                              
                                                                                                                                  ˌek-strə-ˈsō-lər 
                                                                                                                              
            -ˌlär
                                                      
                                                          
                                
              
          
                                                      : originating or existing outside the solar system                                      
              
                             
extrasolar planets
                         
                
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  Merriam-Webster unabridged




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