Now, i don't have any spoilers of unpublished books yet, so all of this is from events up to Rebirth. I was sitting around with a few friends discussing this and we think we figured it out. This may be a little out of order and confusing, but it seemed to us where they are going with this. Where to begin....to put it bluntly, the Emperor had a superwaepon developed that the Jedi find and use to send the Vong back their galaxy. So how did we get to that? 1. Rogue Planet. Takes place about the time that the Vong are scouting the galaxy. Obviously the Jedi, and Tarkin, would report back what they knew to Palpatine, tipping him off that the Vong were here and he uses his spy network to get some info on him. Also a possibility that Vergere does manage to get a message or two back to them that gives some input on the Vong, and their capabilities. 2. Zahn duology. The Chiss are waiting in the Unknown Regions for a extra-galactic enemy. So Thrawn knows about the Vong. How? Either from the emperor himself, or from the records he retrieves on Wayland. 3. Vector Prime. OK, a big deal was made about the mayor of Serndipal. He seems to know who the Vong are. Happens to have a thermal detonator and is willing to sacrafice himself with no problem to help defeat them. Who was he? A sentry posted by palpatine. Palpy knows they are coming, but not sure when. He puts these sentries out there to notify him when the Vong attack the Rim and to try to fight them off. The mayor was one of those. He was human while the others on the planet were not. Expect to see the Jedi run into some more of these. I assume based ont he timeline that they are clonetroopers that are sent out, as was Boba Fett, so let that start another argument that the mayor was Fett. 4. So what happens in detail. The Jedi run into another sentry on some other planet they go to for a mission. Anakin is there and recognizes the guy as identical to the mayor. They finally rope the guy into telling what he was doing there. After the defeat of the Emperor, they found it necessary to stay as sentries to protect the planets that they came to love. So he tells the Jedi that the Emperor put them there and has information about the Vong. He helps the Jedi search for the location of another secret castle that the Emperor had. They find it, and with it the plans for a superweapon that will defeat the Vong, likely something biological. So the Jedi have to travel to Zenkot, from RP, to have it built there. While there, Luke bonds with the pods which give him some memories about his father and Ben. (Just a neat side story) They have to defend the planet from the Vong, who had spies there and find them. They escape with the weapon and go after Coruscant, which the Vong have taken over. They enable the weapon, which is a being that can take over control of all Vong creatures that they use. the Jedi use the advantage to defeat the Vong. There it is, let me know what you think. P.S. An idea for EU well in the future came to us as well. It is based ont he fact that the Vong, when they return spend about 1000 years scattering basals all over thier galaxy. To revenge their defeat, they turn the basals to the NR galaxy, and collide the 2 in a cataclysm. The galaxy rebuilds for centuries, and the Jedi are all forgotten, except for one family that possesses all of the secrets...well, that is just setting it up. No specifics yet.