Danger
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Astronuc said:We believe that in the future, probably 4 or 5 billion years, give or take, the sun will become a nova and subsequently shrink.
You confuse me, dear friend. You're the one with the astrophysics degree, not me, but isn't that statement erroneous? I was under the impression that at least 1.3 Solar masses were required to achieve nova eruption. Red Giant should be the the worst that our sun can do to us. (I'm not taking that lightly; it will still wipe out the entire Solar system... just not explosively.) Am I misunderstanding something?