![](https://science.nasa.gov/wp-content/uploads/2023/06/piday-oli-20230912-lrg.jpg?w=4096&format=jpeg)
Taking a Bite Out of Pi
A cycle of rapid advance and retreat at Sortebræ, a glacier in eastern Greenland, built pi-shaped tongues of ice before they later retreated. View the full story
Credits: NASA Earth Observatory / Wanmei Liang
TakenSeptember 12, 2023
Image CreditNASA Earth Observatory / Wanmei Liang
Size640x427px