ET White Paper: To Find the First Earth 2.0

• DOI: 10.48550/arxiv.2206.06693
• Publication Date: 2022-01-01
• Authors: Jian Ge; Hui Zhang; Weicheng Zang; Hongping Deng; Shude Mao; Ji‐Wei Xie; Hui-Gen Liu; Ji‐Lin Zhou; Kevin Willis; Chelsea X. Huang; Steve B. Howell; Fabo Feng; Jiapeng Zhu; Xinyu Yao; Beibei Liu; Masataka Aizawa; Wei Zhu; Ya-Ping Li; Bo Ma; Quanzhi Ye; Jie Yu; Maosheng Xiang; Cong Yu; Shang-Fei Liu; Ming Yang; Mu-Tian Wang; Xian Shi; Tong Fang; Weikai Zong; Jinzhong Liu; Yu Zhang; L. Zhang; Kareem El-Badry; Rong-Feng Shen; P. H. T. Tam; Zhecheng Hu; Yanlv Yang; Yuan-Chuan Zou; Jiali Wu; Wei‐Hua Lei; Jun-Jie Wei; Xue-Feng Wu; Tianrui Sun; F. Y. Wang; Bin‐Bin Zhang; Dong Xu; Yuan-Pei Yang; Wenxiong Li; Danfeng Xiang; Xiaofeng Wang; Tinggui Wang; Bing Zhang; Peng Jia; Haibo Yuan; Jinghua Zhang; Sharon X. Wang; Tianjun Gan; Wei Wang; Yinan Zhao; Yujuan Liu; Chuanxin Wei; Yanwu Kang; Baoyu Yang; Chao Qi; Xiaohua Liu; Quan Zhang; Yuji Zhu; Dan Zhou; Congcong Zhang; Yong Yu; Yongshuai Zhang; Yan Li; Zhenghong Tang; Chaoyan Wang; Fengtao Wang; Wei Li; Pengfei Cheng; Chao Shen; Baopeng Li; Yue Pan; Sen Yang; Wei Gao; Zongxi Song; Jian Wang; Hongfei Zhang; Cheng Chen; Hui Wang; Jun Zhang; Zhiyue Wang; Feng Zeng; Zhenhao Zheng; Jie Zhu; Yingfan Guo; Y Zhang; Yan Li; Lin Wen; Jie Feng; Wen Chen; Kun Chen; Xingbo Han; Yingquan Yang; Haoyu Wang; Xuliang Duan; Jiangjiang Huang; Hong Liang; Shaolan Bi; Ning Gai; Zhishuai Ge; Zhao Guo; Yang Huang; Gang Li; Haining Li; Tanda Li; Yuxi; Lü; Hans-Walter Rix; Jianrong Shi; Fen Song; Yanke Tang; Yuan-Sen Ting; Tao Wu; Yaqian Wu; Tao-Zhi Yang; Qing‐Zhu Yin; Andrew Gould; Chung‐Uk Lee; Subo Dong; Jennifer C. Yee; Yossi Shvartzvald; Hongjing Yang; Renkun Kuang; Jiyuan Zhang; S. Liao; Zhaoxiang Qi; Jun Yang; Ruisheng Zhang; Jiang Chen; Jian-Wen Ou; Yaguang Li; P. G. Beck; T. R. Bedding; T. L. Campante; W. J. Chaplin; J. Christensen‐Da...; R. A. García; P. Gaulme; L. Gizon; S. Hekker; Daniel Huber; S. Khanna; Yan Li; S. Mathur; A. Miglio; B. Mosser; J. M. Joel Ong; Â. R. G. Santos; Dennis Stello; D. M. Bowman; Mariel Lares-Martiz; Simon J. Murphy; Jia-Shu Niu; Xiaoyu Ma; L. Molnár; Jian-Ning Fu; P. De Cat; Jie Su; the ET consortium
• Keywords: Gravitational microlensing; Asteroseismology; Cassegrain reflector

We propose to develop a wide-field and ultra-high-precision photometric survey mission, temporarily named "Earth 2.0 (ET)". This mission is designed measure, for the first time, occurrence rate orbital distributions of Earth-sized planets. ET consists seven 30cm telescopes, be launched Earth-Sun's L2 point. Six these are transit telescopes with field view 500 square degrees. Staring in direction that encompasses original Kepler four continuous years, this monitoring will return tens thousands transiting planets, including elusive Earth twins orbiting solar-type stars. The seventh telescope microlensing monitor an area 4 degrees toward galactic bulge. This, combined simultaneous ground-based KMTNet observations, measure masses hundreds long-period free-floating Together, revolutionize our understandings terrestrial planets across large swath distances free space. In addition, data also facilitate studies fields asteroseismology, Galactic archeology, time-domain sciences, black holes binaries.