How many digits of the number PI does NASA use for its calculations?

The article from NASA explores the intriguing topic of the precision of the number Pi, which is approximately 3.14, but actually has an infinite number of digits beyond the decimal point. When it comes to mathematical computations, many people wonder just how many digits we really need. For most everyday applications, just two or three digits are sufficient; however, in fields such as astronomy, engineering, or computer visualizations, much higher precision is required. The article also outlines how, over the years, various calculations have been conducted that pushed the boundaries of Pi's known digits, reaching into the trillions. In conclusion, the question of how many decimal places of Pi we truly need depends on context and application. It is certainly not a simple answer, and the topic of Pi continues to be a subject of research and curiosity for people all around the world.