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Interstellar Object 3I/ATLAS Observed from Mars by China’s Tianwen-1 Spacecraft

  • Authors: Xin Ren, 鑫 任, Wei Yan, 韦 严, Ruining Zhao, 瑞宁 赵, Shu Wang, 舒 王, Xingye Gao, 兴烨 高, Qiang Fu, 强 付, Qing Zhang, 庆 张, Bin Yang, 彬 杨, Man-To Hui, 文韜 許, Zhiyong Xiao, 智勇 肖, Xiaodong Liu, 晓东 刘, Cunhui Li, 存惠 李, Renhao Tian, 仁浩 田, Wenguang Liu, 文光 刘, Dong Wang, 栋 王, Shaoran Liu, 少然 刘, Cong Ren, 聪 任, Jie Dong, 捷 董, Xinbo Zhu, 新波 朱, Pan Xie, 攀 谢, Jian-Yang Li, 荐扬 李, Yan Geng, 言 耿, Jianjun Liu, 建军 刘

Xin Ren et al 2026 The Astrophysical Journal Letters 1003 .

  • Provider: AAS Journals

Caption: Figure 2.

Stacked images of 3I/ATLAS acquired by HiRIC CMOS camera on board the Tianwen-1 spacecraft (upper row) and the corresponding 1/ρ divided images (lower row) from the three epochs. All images are displayed north up and east to the left. The stacked images are displayed with logarithmic brightness stretch, and the enhanced images are displayed with a linear brightness stretch. The arrows in the upper panels mark the projected directions of the Sun and the heliocentric velocity vector. The scale bars are 10,000 km. The bright star trails are visible in each stack due to the apparent movement of 3I in the sky background during each 30 s observation epoch.

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