Really TRUE odd factoids

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Alex321

Guru
Location
South Wales
Sharks are older than the North Star (Polaris)

This is supposed to be for TRUE factoids. Sorry, but that one isn't really.

Sharks are believed to have existed for around 450 million years.

Polaris is actually a triple star system, with the oldest of the three(Polaris B) estimated to be about 1.5 gigayears old (i.e more than three times as old as sharks, and the middle one (Polaris Ab) just given as > 500 million years. The third star (Polaris Aa is indeed thought to be younger than sharks, at 45-67 million years, but is the smallest part of the system, and possibly formed by the merger of two other stars.

https://arxiv.org/pdf/2003.02326
 
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