Geminid meteors may be 10 times older than thought, simulations of oddball asteroid Phaethon suggest 

 The comet-like asteroid Phaethon likely lobbed thousands of rocky fragments toward Earth while rapidly spinning around the sun 18,000 years ago, new research suggests ― and it may fling some more soon. 

https://cdn.mos.cms.futurecdn.net/NEWQJERcQn7jL82qwPKnEL.jpg

https://www.space.com/geminid-meteors-10-times-older-phaethon-simulations