Something to note for next time: don’t try to prove to your Twitter followers that the Earth is flat - Neil deGrasse Tyson might engage you in a battle of the twits.

Rapper B.o.B. took to the twitosphere Monday to take on the mostly widely-accepted scientific fact that the world is round, stating that he couldn’t see or prove the curvature of the Earth from where he was standing.

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“A lot of people are turned off by the phrase 'flat earth' ... but there's no way u can see all the evidence and not know... grow up,” tweeted the rapper, who continued to tweet photos and sentiments to support his theory.

At one point, the rapper “congratulated” NASA for being gatekeepers of the edge of the Earth.

Eventually, his rant garnered the attention of astrophysicist rockstar Neil deGrasse Tyson, who explained, “Earth's curve indeed blocks 150 (not 170) ft of Manhattan. But most buildings in midtown are waaay taller than that.”

He continued, “Duude — to be clear: Being five centuries regressed in your reasoning doesn’t mean we all can’t still like your music”

In a further bizarre twist, B.o.B released the diss track "Flatline" late on Monday, which samples deGrasse Tyson.  

A nice recap of the twitter feeds can be found here.