Okay I am in a space ship, orbiting a star at say a 100AU. Suddenly my onboard astronomy expert says. "Hey the star is about to collapse, we have to get out of here."
Now the question - is there any practical way that we could predict say with 24 hour accuracy that a star could either nova or supernova.
And is there any class of star that can nova, that does not need to be part of a binary system?
Thanks yet again - Glen