![Massimo on Twitter: "NASA only uses 15 digits of π for calculating interplanetary travel. At 40 digits, you could calculate the circumference of a circle the size of the visible universe with Massimo on Twitter: "NASA only uses 15 digits of π for calculating interplanetary travel. At 40 digits, you could calculate the circumference of a circle the size of the visible universe with](https://pbs.twimg.com/media/Fjdn1NMWIAAbto6.jpg)
Massimo on Twitter: "NASA only uses 15 digits of π for calculating interplanetary travel. At 40 digits, you could calculate the circumference of a circle the size of the visible universe with
![Jaden King on Twitter: "Happy #PiDay Here are the first billion digits of Pi. https://t.co/iKnLWHwWJJ" / Twitter Jaden King on Twitter: "Happy #PiDay Here are the first billion digits of Pi. https://t.co/iKnLWHwWJJ" / Twitter](https://pbs.twimg.com/media/CdiK0zGW4AAeCEL.jpg)
Jaden King on Twitter: "Happy #PiDay Here are the first billion digits of Pi. https://t.co/iKnLWHwWJJ" / Twitter
![Massimo on Twitter: "NASA only uses 15 digits of π for calculating interplanetary travel. At 40 digits, you could calculate the circumference of a circle the size of the visible universe with Massimo on Twitter: "NASA only uses 15 digits of π for calculating interplanetary travel. At 40 digits, you could calculate the circumference of a circle the size of the visible universe with](https://pbs.twimg.com/media/D1yJ6mSX0AAP4WM.jpg)