Turns out HMG was right!
Victory lap
As a man of science, this is a worry.
There is no reason why our sun couldnt produce a nova. The mechanism proposed here involves a magnetohydrodynamic kick and the sun becoming fouled by interstellar dust, and apparently vomiting off a huge mass of plasma and matter.
Evidence that it has in the past.
Not a planet killing event, but would certainly be a bad time. I read a while back about the black sun and the earth being bathed in violet light rather than inky black at night.
What does the dissensus hive mind think? Crackpot catastrophising, or imminent threat?