I came here to question whether that claim is true, saw your post, and thought something like “well, that settles that.” Then I scrolled down and saw neatchee’s (great username) post and now my whole world is uncertain.
Comment on stars & sharks
essteeyou@lemmy.world 2 weeks ago
Polaris is 45-67 million years old.
The oldest total-group chondrichthyans, known as acanthodians or “spiny sharks”, appeared during the Early Silurian, around 439 million years ago.
It’s not even close.
toynbee@lemmy.world 2 weeks ago
LustyArgonianMana@lemmy.world 2 weeks ago
Appalachian mountains are even older
ChicoSuave@lemmy.world 2 weeks ago
Dinosaurs died off 65 MYA. Dinosaurs were most likely gone before Polaris formed.
i_stole_ur_taco@lemmy.ca 2 weeks ago
They probably died off because they couldn’t use Polaris for navigation!
mkwt@lemmy.world 2 weeks ago
Polaris goes in and out of North Star status on the 26,000 year precession cycle. So for the duration of humanity (let’s say 100,000 years), there have been decent chunks of time where it’s not in use.
sorrybookbroke@sh.itjust.works 2 weeks ago
You gotta rest up man, that’s a pretty big job for one star
aeronmelon@lemmy.world 2 weeks ago
I’m now sad that dinosaurs could never look up and see Polaris.
ZeffSyde@lemmy.world 2 weeks ago
Eh, they got to see the thousands of other stars that are now obscured by light/atmospheric pollution.
stewie3128@lemmygrad.ml 2 weeks ago
Most nights even I can barely see Polaris.