OSIRIS-RExploring On 24 September, the OSIRIS-REx satellite safely returned samples from the asteroid Bennu to Earth! Before collecting its samples, it spent 2 years orbiting Bennu and mapping its surface. If we model the satellite and asteroid as point masses, we can write the normalized equations of motion of the satellite as r = r 2 k r 2 + u1 (1) = 2 r r + 1 r u2 (2) where r is the distance from the satellite to the asteroid, is the satellite's angular position, k is a normalization constant, and u1 and u2 are control inputs from the satellite's thrusters