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Formation age of the lunar crater Giordano Bruno |
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| Authors: | Tomokatsu Morota Junichi Haruyama Hideaki Miyamoto Chikatoshi Honda Makiko Ohtake Yasuhiro Yokota Tsuneo Matsunaga Naru Hirata Hirohide Demura Hiroshi Takeda Yoshiko Ogawa Jun Kimura |
| Affiliation: | 1. Institute of Space & Astronautical Science, Japan Aerospace Exploration Agency, 3‐1‐1 Yoshinodai, Sagamihara 229‐8510, Japan;2. University Museum, The University of Tokyo, 7‐3‐1 Hongo, Bunkyo‐ku, Tokyo 113‐0033, Japan;3. The University of Aizu, Ikki‐machi, Aizu‐wakamatsu 965‐8580, Japan;4. Center for Global Environmental Research, National Institute for Environmental Studies, 16‐2 Onogawa, Tsukuba 305‐8506, Japan;5. Chiba Institute of Technology, 2‐17‐1 Tsudanuma, Narashino 275‐0016, Japan;6. Department of Cosmoscience, Hokkaido University, Kita 10 Nishi 8, Kita‐ku, Sapporo 060‐0810, Japan |
| Abstract: | Abstract— Using the Terrain Camera onboard the Japanese lunar explorer, SELENE (Kaguya), we obtained new high‐resolution images of the 22‐kilometer‐diameter lunar crater Giordano Bruno. Based on crater size‐frequency measurements of small craters (<200 m in diameter) superposed on its continuous ejecta, the formation age of Giordano Bruno is estimated to be 1 to 10 Ma. This is constructive evidence against the crater's medieval age formation hypothesis. |
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