Cutecity [he/him] to chapotraphouse • 5 days agoWhat's up with the north star?imagemessage-square43 fedilinkarrow-up1112
arrow-up1112imageWhat's up with the north star?Cutecity [he/him] to chapotraphouse • 5 days agomessage-square43 Commentsfedilink
minus-squareAradina [She/They]@lemmy.mlhexbear33·5 days agoPolaris Aa is only 60 ish million years old, polaris Ab is under 500 million. Polaris B is the 1.5 billion years old one. Polaris A is the vastly brighter of the three and is typically what people mean when they refer to the three stars. linkfedilink
minus-squareAradina [She/They]@lemmy.mlhexbear30·5 days agoAlso re: the age of sharks, 300 million is a low estimate. It's like 300 to 420 million, depending on how you define a shark. linkfedilink
Polaris Aa is only 60 ish million years old, polaris Ab is under 500 million. Polaris B is the 1.5 billion years old one. Polaris A is the vastly brighter of the three and is typically what people mean when they refer to the three stars.
Also re: the age of sharks, 300 million is a low estimate. It's like 300 to 420 million, depending on how you define a shark.