(AllHipHop News) This may go down as the strangest and most unexpected rap beef in Hip Hop history: Atlanta rhymer B.o.B versus astrophysicist Neil deGrasse Tyson. It all started when B.o.B went on a Twitter rant about the Earth actually being flat. Tyson responded to the No Genre label head, and then B.o.B dropped a track called “Flatline” which included a jab at the 57-year-old StarTalk host.

[ALSO READ: B.o.B Argues The Earth Is Really Flat; Astrophysicist Neil deGrasse Tyson Responds]

Neil deGrasse Tyson decided to answer back. He recruited a rapper named Tyson to pen some bars directed at Bobby Ray. The JusListen Entertainment artist’s diss song “Flat To Fact” borrows the beat and flow from Drake’s “Back To Back” as the spitter calls out B.o.B for promoting the idea that the world is not round.

Dear @bobatl, as an astrophysicist I don’t rap, but I know people who do. This one has my back: https://t.co/BbMi4tzHLz

— Neil deGrasse Tyson (@neiltyson) January 26, 2016