I keep hearing that a bubble of true vacuum can get formed when the Higgs field jumps to a higher potential and will engulf the entire universe eventually.
If a bubble of true vacuum forms near a point near the edge of the visible universe, it would never reach us due to the expansion of space. So the doomsday scenario predicted may not really occur.
So the question is, would an expanding bubble of true vacuum really engulf the entire universe or only part of it?