As all nerds know, web famous astro-physicist Neil deGrasse Tyson is good friends with equally prominent scientist Bill Nye the Science Guy, but who knew they were such close friends?

While giving a lecture at Florida State University, a student asked Neil a question concerning Bill Nye. That’s when Neil admitted that Bill is “his closest friend” of his adult life.  

To prove it, he called Bill in front of the entire packed auditorium, and put him on speakerphone. Naturally, the crowd went wild.  

Ricardo Aleman was an attendee of the speech, and, luckily for the Internet, recorded the entire event