Math Enthusiasts Collaborate to Calculate Pi on the Moon Using Rover
Later this year, a small rover will embark on a unique mission on the lunar surface, involving the calculation of the mathematical constant pi.
By Emma R. Hasson, edited by Sarah Lewin Frasier
During its journey across the moon, Astrobotic’s CubeRover, which is about the size of a shoebox, will have some spare computing power that engineers at the company saw as an opportunity to engage in a unique project. They reached out to Matt Parker, a math YouTuber and comedian known for his creative approaches to calculating pi, to brainstorm ideas for utilizing this additional capacity.
Parker quickly seized upon the idea of calculating pi on the moon, a concept that intrigued him but initially made him question the legitimacy of the proposal. After confirming the authenticity of the offer, Parker began developing a plan to incorporate random numbers generated by data collected by the rover to calculate increasingly accurate approximations of pi.
There are various methods for calculating pi using random numbers, and Parker is currently exploring different options. One approach involves using random coordinates within a 2×2 square to determine the proportion of points that fall within a circle with a radius of 1. This ratio converges towards pi/4, representing the area of the unit circle divided by the area of the square. Alternatively, Parker may explore using random points in three dimensions to estimate pi or employ a formula for the surface area of a section of a sphere, mimicking the rover’s path on the moon’s surface.
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Astrobotic agreed to support the project at no profit, but there were significant engineering costs associated with integrating the code into the rover without affecting its primary mission objectives. To raise the necessary funds, Parker turned to YouTube and Kickstarter, where his audience quickly exceeded the $150,000 target. The overwhelming support demonstrated the enthusiasm within the math community for such a project.
Parker emphasizes the importance of engaging in math for enjoyment and community-building rather than solely for practical purposes. While calculating pi on the moon may not lead to groundbreaking discoveries, it serves as a reminder that math is accessible and enjoyable for everyone. He plans to involve schools in the project, allowing students to participate in calculating pi and fostering a deeper appreciation for mathematics.
Andrea Davis, the project manager and lead mechanical engineer at Astrobotic, is eager to inspire students through this initiative, showcasing the potential for young minds to pursue careers in space exploration and engineering.
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