Cutecity [he/him]@hexbear.net to chapotraphouse@hexbear.netEnglish · 5 days agoWhat's up with the north star?hexbear.netimagemessage-square43fedilinkarrow-up1112arrow-down11
arrow-up1111arrow-down1imageWhat's up with the north star?hexbear.netCutecity [he/him]@hexbear.net to chapotraphouse@hexbear.netEnglish · 5 days agomessage-square43fedilink
minus-squareAradina [She/They]linkfedilinkEnglisharrow-up33·5 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.
minus-squareAradina [She/They]linkfedilinkEnglisharrow-up30·5 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.
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.