American rapper and music producer BoB has revealed a somewhat unusual belief in the year 2016: he thinks the Earth is flat.

BoB, real name Bobby Ray Simmons Jr, made the surprise announcement and then unleashed a torrent of tweets attempting to prove scientifically that the Earth is not a sphere.

He batted back objections about time zones, the moon, the tides, ships on the horizon, plane journeys, and the unknown exact location of the edge of the Earth.

Instead, he claimed that the human race has been deceived for hundreds of years – presumably starting from Pythagoras.

Popular astrophysicist Neil deGrasse Tyson stepped in to try to explain some things – not that he got anywhere.

In the end, he said he was content to just enjoy BoB’s songs, including Nothin’ On You, Airplanes, and Magic.

Twitter has been full of disbelief, horror and amusement.

There was, bizarrely, a sneaking admiration for BoB and his battle against science.

One person had an idea of who could sort this all out: British astronaut Tim Peake, currently on board the International Space Station.

Though we’re not sure even that could persuade BoB…