Subscribe | UPI Odd Newsletter Subscribe Astrophysicist Neil deGrasse Tyson and other fans of math celebrated Pi Day on Saturday by taking to Twitter. Pi Day celebrates the mathematic symbol pi, which is the ratio of a circle's circumference to its diameter. It is typically referenced as being 3.14, but it has a never ending amount of numbers in it. Saturday represents Pi Day in the United States, because March 14 is written as 3/14. Many other places put the day first in a date. Advertisement Tyson made his usual pun-based jokes, such as saying he's "Pi-lingual." Yup. I've been Pi-Lingual since childhood. I want to be ready. May need it in a first exchange of greetings with Space Aliens— Neil deGrasse Tyson (@neiltyson) March 14, 2015 Best Pi-Day Ever: 53 minutes & 58 seconds after 6 o'clock, March 14, the year 1592: 3/14/1592; 6:53:58— Neil deGrasse Tyson (@neiltyson) March 14, 2015 Italian astronaut Samantha Cristoforetti, who lives in the International Space Station, also made jokes. Nice of you to visit on #PiDay. I'm a big fan of rationality, but you... I love how irrational you are! #MathIsCool pic.twitter.com/KMyYR1CHqv Advertisement— Sam Cristoforetti (@AstroSamantha) March 14, 2015 Read More Sen. Ted Cruz pleas with NASA to stop focusing on Earth POV footage captures eagle descending from world's tallest building CIA director: 'Terrorism is greatly amplified' by Internet
