After rapper B.o.B. took to Twitter.com to inform his millions of followers that the earth is flat, prominent astrophysicist Neil deGrasse Tyson weighed in by dropping science and facts on B.o.B.
After rapper B.o.B. took to Twitter.com to inform his millions of followers that the earth is flat, prominent astrophysicist Neil deGrasse Tyson weighed in by dropping science and facts on B.o.B.