Here a CNN article:
https://edition.cnn.com/2019/12/26/w...rnd/index.html
But I don't expect an explosion in our lifetimes.
And I have my doubts about the 'red giant' nature. Well, probably I am saying nonsense, but it is just a theory.
Eta Carinae also appears red, but it is actually a very hot bluish star, but duct clouds around Eta make it red, just like the bushfire smoke makes the Sun appear red in NSW.
In this not also the case with Betelgeuse, that it is actally a hot Rigel like star embedded in a shroud of dust ?