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In this paper, in situ data of Mars satellite mission MAVEN was analyzed. Direct evidence was found for explosive mass ejections from Mars ionosphere through magnetic reconnections between strong crustal field regions with open magnetic fields. The mass ejections by magnetic reconnection in the Mars ionospheric lead to Mars mass loss and are very similar to the observed solar coronal mass ejections (CMEs). This study was led by Academician Lou-Chuang Lee of Academia Sinica and Professor Xiao-Jun Xu of Macau University of Science and Technology and was published in Nature Astronomy (April 2024).