Prime Focus
The Mars Express spacecraft performed a flyby of Phobos, the larger of Mars’s two moons (and even so it’s only 27 km across along its longest axis), on January 9, 2011, passing within 100 km of Phobos’s surface, and returning images like these (there’s even a 3D image if you follow the link). Credit: ESA/DLR/FU Berlin (G. Neukum).

The Mars Express spacecraft performed a flyby of Phobos, the larger of Mars’s two moons (and even so it’s only 27 km across along its longest axis), on January 9, 2011, passing within 100 km of Phobos’s surface, and returning images like these (there’s even a 3D image if you follow the link). Credit: ESA/DLR/FU Berlin (G. Neukum).

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