I realize that magic ignores physics, and that RPGs are notoriously inaccurate... but I'm curious if a close enough or approximate answer can be deduced from the existing lore.
Given that, do the changes to the sun of Athas match up with any scientifically known stellar life cycle. If so, roughly how much lifespan can be estimated for the sun of Athas to have left, barring further meddling or tampering with the star?
After all, there is a proven linkage between Athas and Earth in the game rules.
Regardless of scientific or magical, I'm curious if there is any indication in the published material as to what type or category of star Athas' sun would be given if humans from Earth made it to Athas?
I am looking for a rough estimate if possible, well reasoned justification if not. 2e, 3e, & 4e, and the book series lore are valid sources. I'm not looking for a edition specific answer, but a general answer from the published material.