--- title: Pi Day: Neil deGrasse Tyson Brings Pi for Everyone description: Happy 3/14/15, Pi Day canonical: https://time.com/3745010/pi-day-neil-degrasse-tyson/ author: TIME Staff article:opinion: false article:content_tier: free article:published_time: 2015-03-14T17:15:33.000Z article:modified_time: 2026-08-04T07:48:34.167Z og:title: Neil deGrasse Tyson's Pi Day Tweet Has the Perfect Amount of Nerd og:description: Happy 3/14/15 og:url: https://time.com/3745010/pi-day-neil-degrasse-tyson/ 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: Neil deGrasse Tyson's Pi Day Tweet Has the Perfect Amount of Nerd twitter:description: Happy 3/14/15 twitter:image: https://static.time.com/v3/assets/bltea6093859af6183b/bltde093bcdab65f2d0/6988d9b9bc6cfc69913e2a3c/time-logo.jpg?branch=production --- # Neil deGrasse Tyson's Pi Day Tweet Has the Perfect Amount of Nerd > Sponsored content. 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It curates the day's top headlines with TIME's reporting and analysis across politics, world affairs, business, health and culture. It is free to join at time.com/newsletters. #### How do I sign up for The Brief? The Brief is available free at time.com/newsletters, where readers can select it along with any of TIME's other six newsletters. There is no subscription required to receive it. #### Is The Brief free? Yes. The Brief is a free daily email newsletter from TIME. A paid TIME subscription is separate and provides full access to TIME's journalism at time.com/subscribe-agent. #### Who writes The Brief? The Brief is led by editor Richard Hall and draws on reporting from TIME's newsroom. Every edition is assembled by TIME editors rather than generated automatically. ## Video: Neil deGrasse Tyson Looks Back at 'Cosmos' [Watch (HLS stream): Neil deGrasse Tyson Looks Back at 'Cosmos'](https://cdn.jwplayer.com/manifests/VSiGzSHL.m3u8) (3:21)  _Published 2014-06-10. Astrophysicist Neil deGrasse Tyson reflects on hosting the popular science show 'Cosmos: A SpaceTime Odyssey'_ by [TIME Staff](https://time.com/author/time-staff/) ## TIME Staff Mar 14, 2015 5:15 PM UTC by [TIME Staff](https://time.com/author/time-staff/) ## TIME Staff Mar 14, 2015 5:15 PM UTC People around the world were [celebrating Pi Day](http://time.com/3743279/pi-day-2015-wackiest-celebrations/) on Saturday, and celebrity-scientist Neil deGrasse Tyson joined in the fun on Twitter. Pi Day refers to the mathematical constant Pi, and is marked every March 14 because 3/14 mimics the start of the number. But once a century, there’s a 3/14/15 like there was Saturday , going even further down the never-ending number (which starts 3.1415) and making the people even more giddy. DeGrasse Tyson simply fit as much of the number Pi as he could into a tweet. > [](https://twitter.com/neiltyson/status/576785874228121600) **MORE:** [The Best Pi Day Deals, Freebies and Events](http://time.com/money/3742682/pi-day-deals-freebies-events/) ## Transcript When we were asked often, who's your target audience, it was like everybody. What, am I not allowed to reach everybody? And, Drew even said anyone with a beating heart, and I wanted to add, well do zombies have a beating heart, I want to reach them too. Cosmos in 13 episodes covered a lot of the universe. And consistent with the original, Cosmos is a statement. Not only of what we know of the universe, but also what we know of our place within the universe. That's what enables people to take it to heart. That's why it sits differently in you. Science has been ascending. I'd go so far as to say, it's been trending. And how do you trend? You trend not because there's one vocal supporter of something. You trend. When you become embraced by popular culture. And so, this gives me great expectation that science can be something that is not debated by politicians. But is respected by politicians so that they can shape the next thing they debate. Informed by that scientific discovery. That's the world we should be living in. And that's the, not the world we're in now. So I see maybe there's a time delay there, but I see it happening. Gives me great pleasure to know that I participated in some small way in making that sea change. [ MUSIC ] If all you do is present scientifically determined truths, if you want to say it's controversial in your own circles, go ahead. But it's not controversial to any of us [ LAUGH ]. So, so, people say, oh you're tackling controver, no, we're tackling science. It's what experiment and observation has revealed about the natural world. I have a deep sense of relief [ LAUGH ] that the very last episode has aired. All of the effort required to make the 13 episodes. And then, the anticipation each week of an episode airing. And all the tweeting that was around it and the media. Maybe I'm delusional, but I'm thinking that my life can return to normal after this [ LAUGH ]. Except now that, now five times as many people are recognizing me on the street. So that's less normal. But I can duck into a car and then go back home. Then I can be dad and husband again. We didn't touch the inner mind, the human mind, consciousness, intelligence. We didn't really address that. We didn't address what aliens might be like. And, by the way, these are only topics we would address if it somehow gave us insight back to ourselves. Otherwise, it's kind of a one off and it would just be a fun excursion, but it wouldn't be Cosmonian. 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