this post was submitted on 21 Jul 2025
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[–] logicbomb@lemmy.world 67 points 1 week ago (5 children)

Also from Wikipedia:

Although appearing to the naked eye as a single point of light, Polaris is a triple star system, composed of the primary, a yellow supergiant designated Polaris Aa, in orbit with a smaller companion, Polaris Ab; the pair is in a wider orbit with Polaris B. The outer pair AB were discovered in August 1779 by William Herschel, where the 'A' refers to what is now known to be the Aa/Ab pair.

I learned something new today. And if I'm reading the details section correctly, while the outer pair of stars are actually older than sharks, it's the bright star that you can actually see that's younger than sharks.

[–] Skullgrid@lemmy.world 15 points 1 week ago (4 children)

And if I’m reading the details section correctly, while the outer pair of stars are actually older than sharks, it’s the bright star that you can actually see that’s younger than sharks.

This makes even less sense, how is the heavier thing in the middle younger than the things that orbit it?

[–] dwindling7373@feddit.it 28 points 1 week ago (1 children)

I may be wrong but a mass of inhert hydrogen has the same mass of a radiating one, so they could have been orbiting a mass of gas a long time before the "newer" one ignited.

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