Perry also confesses to a pair of dead celebrity crushes on this week's episode of 'StarTalk'
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It’s not every day you learn something new about your own Twitter profile. But that’s just what Neil deGrasse Tyson does: He blows minds. And he certainly does just that with Katy Perry on this week’s episode of StarTalk.

We won’t totally spoil the exclusive clip above, but here’s just a taste of what happens when these two electrons collide:

NDT: Isaac Newton discovered it.
KP: Love him.
NDT: I love me some Isaac Newton.
KP: I have a crush on him and Socrates.
NDT: Is that right? Oh, wait a minute. Oh, so that accounts for your one-phrase bio on your Twitter page: “I know nothing.”
KP: What do you mean?!
NDT: That’s Socrates. Plato, via Socrates.

Perry goes on to talk about her insatiable thirst for knowledge, admitting, “The more that I learn, the more that I realize I know nothing.” Tyson’s response gets rather deep. You’ll have to watch the clip above to see it.

StarTalk with Neil deGrasse Tyson airs Sundays at 11 p.m. on National Geographic.

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