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 set , students use the mathematical constant pi to find out just how much haze is on Saturn's moon Titan. Materials Pi in the Sky 3: Hazy Halo worksheet – download PDF Pi in the Sky 3 answer key (first problem) – download PDF Background Saturn's largest moon Titan is the second l