Gamma Erandi nebula

A nebula of young stars near Betazed -- at least 15 hours' travel at unspecified warp -- that had been unmapped by the Federation until 2366. Its emissions interfere with subspace commuication, a normal occurrence for such a phenomenon. The mapping assignment was so routine that Captain Picard allowed Commander Riker and Counselor Troi to take leave on Betazed until it was finished.