Rapper B.o.B wants to crowdfund his own satellite and launch it into space to find out, once and for all, whether the Earth is flat or round. As a flat-Earth conspiracy theorist, the Georgia-based musician is betting on flat, but his $1 million call for cash on GoFundMe has raised only about $2,000 in its first five days, the first $1,000 pledged by B.o.B himself.
Fortunately, there are plenty of cheaper ways than a satellite launch to show that the Earth is round. In the spirit of scientific inquiry, here are seven