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Natl. Acad. Sci. U.S.A."],"published-print":{"date-parts":[[2026,11,3]]},"abstract":"<jats:p>Plasma jets in planetary magnetosheaths are transient, high dynamic pressure structures capable of strongly perturbing downstream magnetospheres and modulating solar wind energy transfer. Although recently identified at Mars, their formation mechanisms and global occurrence remain poorly constrained. Using dual-spacecraft observations from Mars Atmosphere and Volatile EvolutioN and Tianwen-1, we show that magnetosheath jets occur throughout the Martian magnetosheath, in striking contrast to Earth where jet occurrence is strongly controlled by interplanetary magnetic field orientation and largely confined to quasi-parallel shock regions. We propose that this widespread distribution is linked to Mars\u2019 extended hydrogen corona, which generates pickup ions that drive proton-cyclotron waves upstream of the bow shock. 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