this post was submitted on 21 Jul 2025
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If I understand correctly, it is 2billion years old, but 50million years ago it merged with another star, making it more massive and thereby more bright an visible from earth. Fun fact: Due to it beeing a yellow supergiant it will turn red in a couple of thousand years and then die quiet soon.
Source: https://www.scientificamerican.com/article/how-old-is-the-north-star-the-answer-could-change-our-maps-of-the-cosmos/
"soon" and "young" are always interesting terms in Geology and Astronomy.
Tens of millions of years old? Practically brand new!