Neil deGrasse Tyson Schools Rapper B.o.B, Who Thinks The Earth Is Flat

He might be great at spitting lyrics, but he isn’t great at spouting science.

Rapper B.o.B. (whom you know from the 2010 song “Airplanes”) is the latest celebrity to come forward espousing a “flat earth” theory on Twitter.

The rapper, who appears to have been tweeting conspiracy theories about the government, the moon landing and the planet for quite some time now, unleashed a series of photos, tweets and verbal nonsense on Twitter. It doesn’t look like he’s going to quit anytime soon.

Take a look at some of his “evidence” below:

The cities in the background are approx. 16miles apart… where is the curve ? please explain this pic.twitter.com/YCJVBdOWX7

— B.o.B (@bobatl) January 25, 2016

have u been to the edge ? or is that what your science book told you https://t.co/61qaI5xx5f

— B.o.B (@bobatl) January 25, 2016

No matter how high in elevation you are… the horizon is always eye level … sorry cadets… I didn’t wanna believe it either.

— B.o.B (@bobatl) January 25, 2016

Luckily, everyone’s favorite scientist Neil deGrasse Tyson decided to chime in and help B.o.B. with his facts:

@bobatl Earth’s curve indeed blocks 150 (not 170) ft of Manhattan. But most buildings in midtown are waaay taller than that.

— Neil deGrasse Tyson (@neiltyson) January 25, 2016

@bobatl Polaris is gone by 1.5 deg S. Latitude. You’ve never been south of Earth’s Equator, or if so, you’ve never looked up.

— Neil deGrasse Tyson (@neiltyson) January 25, 2016