In the 10th installment of the Pi in the Sky illustrated problem set, students use pi to calculate the size of a rock sample collected by the Perseverance Mars rover, compare the sensitivity of two space telescopes, determine the composition of an asteroid, and find out how much of the Sun will be covered during a solar eclipse. Materials Pi in the Sky 10 poster – Download PDF (for best results, download and print from Adobe Reader) Pi in the Sky 10 handouts – Download PDF (for best results, do