People at one time did not have the privilege of seeing a famous rapper debate a famous astrophysicist about whether the earth was flat. We are deprived no more.

Bobby Ray Simmons Jr., a Grammy-nominated rapper-singer better known as B.o.B, released a “diss track” on Monday aimed at the noted astrophysicist Neil deGrasse Tyson after the two had argued on Twitter about the shape of the planet.

The earth, it should be mentioned, is not flat, according to centuries of scientific consensus. The 27-year-old rapper, who has more than two million followers on Twitter, argued otherwise on Sunday, saying that there was a cross-governmental conspiracy. He posted several photos showing flat horizons.