Atlanta rapper B.o.B. tried to convince people on Twitter that the Earth is flat

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

Rapper B.o.B. took to Twitter on Sunday to try and convince people that the Earth is flat. B.o.B., whose real name is Bobby Ray Simmons, Jr., started by asking his followers to explain why he was unable to see the curvature of the Earth in a picture where two cities, which he says are 16 miles apart, can both be seen in the background.

Some followers were unsure whether B.o.B. was really asking if the Earth is round:

@BijouBAKSON I don't think @bobatl was legit saying the earth's flat, he's been in planes, I think he was just asking?
— Sam Prudence (@Sam_Prudence) January 25, 2016

While some offered their solutions to his problems:

@Sam_Prudence @bobatl If earth was flat we'd have already either discovered an edges, or there would be more & more continents discovered.
— Bijou BAKSON (@BijouBAKSON) January 25, 2016

@bobatl you're a flat-earther? You know you can just observe shadows casted at the same time in different locations to prove earth is round.
— Keize Montoya (@KeizeMontoya) January 25, 2016

But this didn't deter the 'Airplanes' artist, who challenged one follower by asking "have u been to the edge?"

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

He went on to say that the horizon is always eye level, "no matter how high in elevation you are".

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

Along with a number of high altitude images, B.o.B. linked to two videos, one entitled "The Zionists, Freemasons, and NASA's Biggest Secret" and the other about "Dissecting the Flat Earth Theory". He then went on to challenge NASA's photographs of the Earth from space.