--- title: Watch Neil deGrasse Tyson Dissing B.o.B the 'Nightly Show' description: The astrophysicist Neil deGrasse Tyson appeared on 'The Nightly Show with Larry Wilmore' to settle the score in an implausible rap feud. canonical: https://time.com/4197726/flat-earth-tyson-bob-twitter-feud/ author: Nash Jenkins article:opinion: false article:content_tier: free article:published_time: 2016-01-28T08:41:48.000Z article:modified_time: 2026-04-13T07:29:24.231Z article:section: Entertainment og:title: Watch Neil deGrasse Tyson Drop the Mic in His B.o.B Rap Battle og:description: The latest in a very implausible rap feud og:url: https://time.com/4197726/flat-earth-tyson-bob-twitter-feud/ og:site_name: TIME og:image: https://static.time.com/v3/assets/bltea6093859af6183b/bltde093bcdab65f2d0/6988d9b9bc6cfc69913e2a3c/time-logo.jpg?branch=production og:image:width: 1200 og:image:height: 675 og:image:alt: TIME og:type: article twitter:card: summary_large_image twitter:title: Watch Neil deGrasse Tyson Drop the Mic in His B.o.B Rap Battle twitter:description: The latest in a very implausible rap feud twitter:image: https://static.time.com/v3/assets/bltea6093859af6183b/bltde093bcdab65f2d0/6988d9b9bc6cfc69913e2a3c/time-logo.jpg?branch=production --- # Watch Neil deGrasse Tyson Drop the Mic in His B.o.B Rap Battle by [Nash Jenkins](/author/p-nash-jenkins/) ## Nash Jenkins Jan 28, 2016 8:41 AM CUT by [Nash Jenkins](/author/p-nash-jenkins/) ## Nash Jenkins Jan 28, 2016 8:41 AM CUT The astrophysicist Neil deGrasse Tyson appeared on _The Nightly Show with Larry Wilmore_ on Wednesday night to settle the score in [one of the century’s most implausible rap feuds](http://time.com/4193114/neil-degrasse-tyson-bob-earth-flat/ "undefined"). Dressed in a black muscle tee, Tyson delivered what was part diss track, part science lecture—written to inform the rapper B.o.B once and for all that the “world isn’t f—kin’ flat.” He also poked fun at the rapper’s height. “And by the way,” he concludes. “This is called gravity.” He then dropped the mic. All of this began, as the [best feuds of this era have](http://time.com/4145796/donald-trump-ted-cruz-fight/ "undefined"), on Twitter. Earlier this week, B.o.B [launched](http://time.com/4193114/neil-degrasse-tyson-bob-earth-flat/ "undefined") into a Twitter essay arguing that the earth is in fact flat, defending his claim with screenshots of trigonometry and conspiracy theory memes. Tyson [reached out](http://time.com/4193114/neil-degrasse-tyson-bob-earth-flat/ "undefined") to the rapper to correct him, and to gently tell him that he was “five centuries regressed in \[his\] reasoning.” And so B.o.B dropped a diss track. In “Flatline,” he advises Tyson to “loosen up his vest” and “come on over here \[to\] try to clown.” He also gives a shout-out to David Irving, the prominent Holocaust denier, and ventures that “Stalin was way worse than Hitler.” Tyson’s nephew is himself a rapper, and he released a track in response called “Flat to Fact,” but Tyson apparently wanted to settle this himself. Shortly after Tyson’s appearance, B.o.B was tweeting about NASA conspiracy theories. > [](https://twitter.com/bobatl/status/692618261070901248) ```json [{"@context":"https://schema.org","@type":"NewsArticle","@id":"https://time.com/4197726/flat-earth-tyson-bob-twitter-feud/","mainEntityOfPage":{"@type":"WebPage","@id":"https://time.com/4197726/flat-earth-tyson-bob-twitter-feud/"},"headline":"Watch Neil deGrasse Tyson Drop the Mic in His B.o.B Rap Battle","datePublished":"2016-01-28T08:41:48.000Z","dateModified":"2026-04-13T07:29:24.231Z","description":"The latest in a very implausible rap feud","url":"https://time.com/4197726/flat-earth-tyson-bob-twitter-feud/","keywords":["Newsfeed","Television","Music","rap","Science topic","Conspiracy Theories","neil degrasse tyson"],"thumbnailUrl":"","author":[{"@type":"Person","name":"Nash Jenkins","jobTitle":null,"url":"https://time.com/author/p-nash-jenkins/"}],"articleSection":"Entertainment","image":[],"publisher":{"@type":"Organization","name":"Time","url":"https://time.com/","logo":{"@type":"ImageObject","url":"https://time.com/images/logo.png","width":528,"height":156},"foundingDate":"March 3, 1923","sameAs":["https://www.facebook.com/time","https://www.instagram.com/time/?hl=en","https://twitter.com/time","https://www.pinterest.com/timemagazine"]}},{"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"item":{"@id":"/section/entertainment/","name":"Entertainment"}},{"@type":"ListItem","position":2,"item":{"@id":"https://time.com/4197726/flat-earth-tyson-bob-twitter-feud/","name":"Watch Neil deGrasse Tyson Drop the Mic in His B.o.B Rap Battle"}}]}] ```