Neil deGrasse Tyson recently got ribbed on Twitter for what his hypothetical reaction to watching A Star Is Bornin a theater would be. (They’re all variations on him being mad about no chemical processes of star creation taking place.) So when NDT dropped by the Vulture Spot at New York Comic Con, host Natalie Walker asked him about what it was like to be memed as a total buzzkill, and also about how a star is actually born, which he described using his best Cosmos voice. Hey, when you have Neil deGrasse Tyson in the house you take advantage of having your own personal science teacher.