As I pointed out in another thread recently, Gamma Velorum is a star that is presumed to be very close to going nova "soon", astronomically speaking. The star is permit-locked, along with the entire rest of the Regor Sector, and may be permit-locked for this reason.
I should point out, as others have above, that the deadly shock wave from supernova explosions propagates at lightspeed and/or just under lightspeed. It means that it will take years for the shockwave from a supernova to reach adjacent star systems. The only people imminently threatened by a supernova explosion are people actually in the nova system at the time. Gamma Velorum is 1000 LY from Sol; if Gamma Velorum exploded "today" (game-time), the shockwave won't reach the nearest human colony, Exphiay, for 800 years. By which time, it probably won't do any harm.
Wikipedia has a
list of stars astronomers suspect will go supernova "soon". Most of these stars are outside the Bubble, though I think they're all in-game. The Wikipedia list is sorted by distance from Sol; the only star on the list within the bubble is the first one, IK Pegasi, known on our starmaps as "HR 8210" - it's an industrial system in Delaine space; no inhabited planets. The only starport in the system directly orbits the primary star. So presumably a CG mission to "evacuate" this system from an imminent supernova would only amount to bringing resources to the station to enable them to build and attach engines so they can leave.
Then, there might be CGs in the coming years to aid and assist other nearby planets as the wave passes through their systems. Unfortunately (for those who wish to see this scenario happen), HR 8210 doesn't have any nearby star systems; we'd have to wait 10 years or more for follow-up missions.
Finally, supernovas aren't the only exploding stars that we might need to evacuate. If you read the system description for Arcturus (which was copied over from the old FE2 map), you'll note the ominous-sounding final sentence. The FE2 Gazetteer article on Arcturus states that the red giant star is "likely to collapse into a white dwarf in the next few thousand years, but some studies say that it could be in the next hundred". It's now 100 years since the Gazetteer was published. It also states that "any change in the star's state will be announced by the Stellar Monitoring Service, so visitors should not be put off". So there is lore-based backing for forewarning of a system-wide disaster that would require the evacuation of an entire inhabited system of half a billion people.
