Last night, B.o.B. jumped on Twitter and began telling his followers that the world was flat, revising an argument that had been dormant for centuries.

To prove his point, B.o.B. used lots of aerial photos that don't show the earth's curb, and forwarded the theory that NASA knows the earth is flat but has been covering it up by denying access to the poles.

(You can see his arguments here.)

Public intellectual and astrophysicist Neil deGrasse Tyson, the killjoy who explained to everyone that the science in Star Wars: The Force Awakens was flawed, has rained on B.o.B.'s flat earth parade with some rational thought.

pic.twitter.com/bKCDLPgxYb

— B.o.B (@bobatl) January 25, 2016

@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

my feed ... pic.twitter.com/NX0rNt298O — B.o.B (@bobatl) January 25, 2016

@bobatl Duude — to be clear: Being five centuries regressed in your reasoning doesn’t mean we all can’t still like your music

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

@bobatl Flat Earth is a problem only when people in charge think that way. No law stops you from regressively basking in it. — Neil deGrasse Tyson (@neiltyson) January 25, 2016