July 18, 2025 D. Arnas, R. Linares “Approximate Analytical Solution to the Zonal Harmonics Problem Using Koopman Operator Theory” Journal of Guidance Control and Dynamics [07315090] 44.11 (2021): 1909-1923. Print. Share this 44.11 (2021): 1909-1923. Print."] Related Stories See all news MIT’s Mason Estrada to sign with the Los Angeles Dodgers New tool gives anyone the ability to train a robot See all news