Japan Geoscience Union Meeting 2023

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[E] Oral

M (Multidisciplinary and Interdisciplinary) » M-IS Intersection

[M-IS03] Astrobiology

Sun. May 21, 2023 1:45 PM - 3:15 PM 105 (International Conference Hall, Makuhari Messe)

convener:Kosuke Fujishima(Tokyo Institute of Technology, Earth-Life Science Institute), Seiji Sugita(Department of Earth and Planetary Science, Graduate School of Science Sciece, The University of Tokyo), Misato Fukagawa(National Astronomical Observatory of Japan), Yohey Suzuki(Graduate School of Science, The University of Tokyo), Chairperson:Misato Fukagawa(National Astronomical Observatory of Japan), Kosuke Fujishima(Tokyo Institute of Technology, Earth-Life Science Institute)

2:20 PM - 2:40 PM

[MIS03-03] Requirements of planetary protection in space exploration missions

*Shunta Kimura1,2, Shino Suzuki1,2, Kazuhisa Fujita1 (1.Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, 2.Space Exploration Innovation Hub Center, Japan Aerospace Exploration Agency)

Keywords:planetary protection, space exploration missions, bioburden

Planetary protection is the activity to prevent both forward and backward contaminations in space exploration missions. The Committee on Space Research (COSPAR) requests to follow the planetary protection policy. The policy defines five different categories according to mission design. Missions to Mars, Europa, and Enceladus are classified as Category III (flyby and orbiter), IV (lander and rover), or V (return to Earth), and missions in category IV and some cases of III and V need the bioburden reduction (below 30~500,000 spores). In this presentation, we will share the basic information of planetary protection and present experimental results of microbial sterilization related to the category IV missions.