this post was submitted on 10 Feb 2026
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xkcd #3205: Carbon Dating

Title text:

This dating is corroborated by the presence of stone tools at the site, rather than earlier and less effective helium ones.

Transcript:

Transcript will show once it’s been added to explainxkcd.com

Source: https://xkcd.com/3205/

explainxkcd for #3205

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[–] nialv7@lemmy.world 34 points 2 weeks ago (1 children)

a cosmologist wouldn't even know what carbon is. it's just some kind of metal.

[–] birdwing@lemmy.blahaj.zone 7 points 2 weeks ago (2 children)

Still boggles my mind that literal matter came to be out of literally nothing but radiation and heat.

[–] Gathorall@lemmy.world 5 points 2 weeks ago* (last edited 2 weeks ago)

And now we can coax some matter to convert back into energy to produce power.

[–] Zwiebel@feddit.org 1 points 2 weeks ago

Let's time travel and take a look!

[–] bulwark@lemmy.world 27 points 2 weeks ago (1 children)

They'll probably date bones in the future by how much plastic is in them.

[–] Etterra@discuss.online 13 points 2 weeks ago (1 children)
[–] sga@piefed.social 5 points 2 weeks ago

they are technically correct, the best kind of correct

[–] jaycifer@lemmy.world 5 points 2 weeks ago

Somewhere between 13.6 billion and 50,000 years old.