In the eighth installment of the "Pi in the Sky" illustrated problem set, students use the mathematical constant pi to solve real-world science and engineering problems. Students will use pi to collect samples from an asteroid, fly a helicopter on Mars for the first time, find efficient ways to talk with distant spacecraft, and study the forces behind Earth's beautiful auroras. Materials Pi in the Sky 8 poster – Download PDF Pi in the Sky 8 handouts – Download PDF Pi in the Sky 8 answer key – D