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NASA's Perseverance Mars rover used its Mastcam-Z camera to capture the silhouette of Phobos, one of the two Martian moons, as it passed in front of the Sun on Sept. 30, 2024, the 1,285th Martian day, or sol, of the mission. Perseverance has captured several Phobos transits since its landing at Mars' Jezero Crater in February 2021. By comparing the various recordings, scientists can refine their understanding of the potato-shaped moon's orbit, learning how it is changing. Eons from now, Phobos' orbit is expected to eventually send the moon toward the Red Planet's surface. Arizona State Univer…
