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...
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