By TIME Staff
People around the world were celebrating Pi Day 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.
More Must-Reads from TIME
- Inside Elon Musk’s War on Washington
- Meet the 2025 Women of the Year
- The Harsh Truth About Disability Inclusion
- Why Do More Young Adults Have Cancer?
- Colman Domingo Leads With Radical Love
- How to Get Better at Doing Things Alone
- Cecily Strong on Goober the Clown
- Column: The Rise of America’s Broligarchy
Contact us at letters@time.com