You probably know that Scarlett Johansson and Colin Jost welcomed their first child, Cosmo, into the world last year.

Now, it’s totally possible that when you heard the name Cosmo, you said to yourself, “Huh. That’s a unique name. What made them land on that one?

Well, fear not, because Scarlett has finally revealed all.

Scarlett recently appeared on The Kelly Clarkson Show, and during the interview, the actor spilled on how she and Colin landed on Cosmo’s name.