There's always room for pi, even on Mars!
By using pi and a crater’s perimeter + area to determine how circular it is, planetary geologists gain clues about its origin and the surface that was impacted: http://go.nasa.gov/2HANpxF #PiDay
By using pi and a crater’s perimeter + area to determine how circular it is, planetary geologists gain clues about its origin and the surface that was impacted: http://go.nasa.gov/2HANpxF #PiDay