A couple years ago #NASA had an article answering a common question about how many digits of pi they use for their calculations. While pi can be computed (with ever-increasing amount of effort) to almost any number of digits, for navigation of space probes they only need 16. https://www.jpl.nasa.gov/edu/news/how-many-decimals-of-pi-do-we-really-need/ #PiDay #space #math #astronomy #tech