Also, before the 2nd and 3rd Knossos' were activated by Bosch, does that mean that the Shivans in the nebula were cut off from the Shivans in the systems beyond Knossos 2. I guess not since the first Sathanas appeared well before Bosch activated the 2nd Knossos. Which means that the Shivans can still use the node without any knossos. I find it unlikely that the Shivans were using other points of entry into the nebula besides Knossos 2.
The GTC Trinity activated the 1st Knossos.
The Trinity was found floating derelict in the Nebula, no where near the second Knossos.
Only 1 Knossos was turned off. The other two were still active. The theory I subscribe to is that the Ancients turned off the Knossos to stop the invasion. But it didn't work, in the same way it didn't work for the GTVA. The Lucifer and it's fleet came through and wiped them out. But before the Lucifer returned home, the node destablized at the Knossos and they couldn't go home. They just floated around, for centuries and millenia until they came to fight against the GTVA. So basically, only 1 Knossos was ever deactivated. There's no point in turning off more than one. There's probably no time to turn off more than one.
Knossos 2 and 3 and whatever lies beyond have been running for thousands of years.
Ah crap, Akala...
IS BOSCH A SHIVAN?
Nope, but he sure created a **** storm in their hive.
I don't believe that they blew up the star to open a gateway to their universe since for one, if that was the case, they would have done it a long time ago, and two, they jumped out before the star exploded. So that means they would have left before the destruction of the star could open a gateway to their universe. Also, I'm sure they have blown up many other star systems in the past. Just look at the Nebula beyond Gamma Draconis and the wing leader (Commander Samsa is his name maybe) saying that it was possibly the remnants of a supernova during the breifing when the Alliance first entered the nebula. Then we find out the Shivans caused a supernova at the end in Capella. So it makes perfect sense that the nebula beyond Gamma Draconis had the same fate as Capalla from the Shivans. See, it is all connected.
I don't think the Shivans are from another universe. You're also assuming things about the process of the jump that aren't founded in fact. What makes the explosion the trigger? Maybe the explosion is the consequence. I mean, what are stars really? Gravity-speaking? I don't know that Einstein thing, but isn't there something about Stars having some underlying gravity stretching throughout the system? Something to do with that time and relativity and all that crazy science I never learned. And aren't nodes found in places of low gravitational influences? So if you destablize the star, doesn't that make the whole area around it, lacking in gravity for that small amount of time, allowing for a jump to who knows where, and then the star takes it's (un)natural conclusion of exploding???
So, basically, the Shivans destabalize a star, making the entire area around in, suitable for a jump. Those that can jump, then the star explodes. And why didn't the Shivans do this earlier? Well:
A - They didn't have access to Capella
B - Bosch wasn't talking to them.
Maybe Capella is suitable for the jump, either as a star, or geographically speaking. There's no real information on how subspace works beyond the fact it connects to systems. There's no real workings as to its range, why systems interconnect and so forth. And yeah, the Shivans seem to be good with subspace. But subspace is a road, and when you've driven on that road all your life how can you be anything but good?
And ONE MORE EDIT - I don't think the Shivans of FS2 are the same as the Shivans of FS1. FS1, as a story is a cliche. Unstoppable, senseless enemy with one super ship. It's been done before, it'll be done again. The whole great preservers thing was the one thing was actually unique about it, and in doing so, the great preservers gave both the Vasudans and the Terrans their origins. As in, how they came to be where they are. But I think that the story of the Shivans, while cool, was also just a gimmick at the time. Voliton I doubt, really explored WHO the Shivans are. WHERE they're from and WHAT they're doing. So then came FS2. And we get to see Shivans with other motivations, Shivans that are actually doing more than just kill humans. So I disregard some things from FS1 all together. Like Alpha 1's comment that "shivans can rebuild nodes". Well, no, they can't. Or else, why would the Knossos trigger their arrival? The Trinity opened a door for the Shivans that Alpha 1 claims they can open themselves, therefore, Alpha 1 is wrong because FS2 is newer than FS1 and information in it trumps FS1.