This month, rapper B.o.B (“Nothin’ on You“) made it apparent on Twitter that he truly believes our planet Earth is flat, not round. I’ll give you a second. Okay, moving on. In a series of tweets (you can scour his conspiracy-laden feed here), he could be seen waxing philosophical (I’m stretching the phrase there) on the “mounting evidence” proving we live on a flat planet. “A lot of people are turned off by the phrase “flat earth” … but there’s no way u can see all the evidence and not know… grow up,” he tweeted. Things began to escalate when renowned astrophysicist and Cosmos host Neil deGrasse Tyson caught wind of B.o.B’s utter nonsense and fired back with his own series of tweets. Of course, these are backed up by actual evidence and you’d think NDT’s involvement would put an end to this. But no, this Twitter beef was only getting started.

B.o.B wasn’t going to go gentle into that good night (Interstellar space reference, boom!) and so he quickly pumped out a new rap called “Flatline” in which he spits, “Neil Tyson need to loosen up his vest, they’ll probably write that man one hell of a check.” Yeah, it’s that bad. Anyway, NDT would go on to slam dunk over the rapper again, but this time with a rap of his own! Turns out Neil’s nephew has the acumen to produce a record in-studio, and under the name TYSON he invented a “diss track” aptly called “Flat to Fact.” Against a backdrop featuring the same beat used on Drake’s Meek Mill diss track “Back to Back,” the younger Tyson fired back at B.o.B with amazing verses like, “I’m bringing facts to combat a silly theory because B.o.B’s gotta know the planet is a sphere, chief, woah!” He even had his uncle record some of his original tweets aimed at B.o.B to include in the track. NDT would go on to publicly back his nephew’s swing.

Now you’d think that would put a nail in this thing, but there’s more. With B.o.B pretty much and out at this point, Neil provided the knock out punch by appearing on Larry Wilmore’s Nightly Show on Comedy Central. He takes off his blazer, grabs a mic, and piles on the evidence like a boss. There’s really no other way to describe it. Check out a mic drop moment for the ages after the break! Best Twitter beef. Ever.