|First Appearance||TOS 05 (8 Sep 1966)|
Technology allowing for Faster-than-Light communication. Harcourt Fenton Mudd used subspace radio to contact the miners on Rigel XII, hoping to arrange a deal and undercut Captain James T. Kirk of the U.S.S. Enterprise NCC-1701. The miners were married to the wiving settlers that Mudd was transporting, but when it was revealed that the deal was a narcotic-fueled fraud, Kirk assured the miners that the marriages could be annuled.