The "Pi in the Sky" math challenge gives students a chance to take part in recent discoveries and upcoming celestial events, all while using math and pi just like NASA scientists and engineers. In this problem from the eighth set, students use the mathematical constant pi to determine how many spacecraft contact pads need to touch the surface of asteroid Bennu to meet mission sample collection requirements. Materials Pi in the Sky 8: Sample Science worksheet – download PDF Pi in the Sky 8: Samp