If you have blue eyes, you’re related to Frank Sinatra, Angelina Jolie, Cameron Diaz, Stephen Hawking, Marie Curie and anyone else with blue eyes. At least, that’s the finding of a group of researchers, who say that humans all originally had brown eyes.

Blue eyes supposed originated due to a mutation from around the Black Sea area during the Neolithic period (6,000 – 10,000 years ago). There’s an OCA2 gene that gets turned off. It stops producing melanin and results in blue eyes. (But if the adjacent OCA gene also gets turned off, you become albino.) According to the research, blue eyes are genetic inheritance, so that would imply that all blue-eyed humans, no matter their race, are linked to the same ancestor.