I hate to be a bother, but does anyone know where the heck you start the Nebula Penetration missions? I'm a member of the Miranu Trading Cooperative already, I haven't picked a side in the Strand War, but I have dealt the Voinians a lot of damage and completed the whole UE-Voinian War storyline (Objective 1, check!). I recall the Strand War is another of the major objectives, along with the Nebula, and I'm going for all 3 this time.
Also, as a side note, when does the Zachit storyline end? Is there more after maiming the Rock? It's tough to tell when non-central objectives are fully complete and the bar is oft-times uncooperative.