特別企画 III
パネルディスカッション「今後の国際宇宙探査で行う科学の検討サイクル構築」に向けた Task Force 報告
Panel Discussion: Task force report on study cycles
construction for henceforward International Space
Exploration sciences
竝木則行 1, 稲富裕光 2, 内田敦 3, 小林泰三 4, 桜井誠人 5
Noriyuki NAMIKI1, Yuko INATOMI2, Atsushi UCHIDA3, Taizo KOBAYASHI4, Masato SAKURAI5
国立天文台，National Astronomical Observatory of Japan,
宇宙科学研究所，Institute of Space and Astronautical Science,
3 株式会社三菱総合研究所，Mitsubishi Research Institute, Inc.,
4 立命館大学，Ritsumeikan University,
5 宇宙航空研究開発機構，Japan Aerospace Exploration Agency,
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1. Task Force and its Study Report
The International Space Exploration Committee, Institute of Space and Astronautical Science, established atask force in April 2023 to share the science roadmap and a common goal of international space exploration
between the International Space Exploration Center and the academic communities. The ISE Committee met
11 times online from April to July and discussed the way to construct an information transfer cycle among theISE Center, the Science and Engineering Committees of ISAS, and academia in the views of (a) informationexchange in the cycle, (b) re-organization of the academic communities, and (c) priorities of the action plans.
Their discussions were summarized in the Study Report, submitted in November 2022 and accepted by theScience and Engineering Committees of ISAS in May 2024.

Although this acceptance terminated the TF

activity, TF members realized that the Study Report includes many issues and suggestions to the academiccommunities, which are meant to be not only the current supporters of ISAS explorations but also thenewcomers of International Space Exploration.

Therefore, the TF wishes to propagate a wide variety ofacademic communities willing to participate in the International Space Exploration, and further to industrialpartners.
2.

Issues of Academic Communities
The TF activity was initiated with an awareness of the scarce mutual communication between the academia

and the ISE Center and the lack of a specific science roadmap of the nation's strategy to promote scientificresearch and industrial development on the Moon and Mars.

The Study Report argue these issues in theabove viewpoints, namely, (a), (b), and (c).
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2.1. Information exchange in the cycle
First and foremost, the ISE Center shall provide thelong-range

frameworkofInternational

Exploration.

This framework must share the visions

and goals with ISE participating countries.

SpaceAt the sametime, the visions and goals shall be modified considering
the current status of space development as well as thefuture limits of our nation's resources.

Also, theframework needs to include a time frame, not only
JAXA's but also commercial mission plans, andforeseeing and substantive plans.
Figure 1. A schematic image of the information transfercycle. The cycle consists of three major members, theScience and Engineering Committee of ISAS, ISE Center,and academic communities. The last member includes
various academic societies, science organizations, andresearch groups.

Examples ofinformation to be transferred in this framework are,-Expected launch opportunities-Plans of non-science missions, such as the ones

aiming at industry development-

Feasible platforms and transport vehicles

On the other hand, the academia shall provide the following information to the ISE Center-

The community's science goals and roadmap and its relation with the Global Exploration Roadmap-

Status of international corporation/collaboration-

Link and merge with different fields of science as well as industry-

Cost estimate, implementation plan, current status of development, and social values

2.2. Re-organization of the academic communities
The participants of ISE owe responsibility for the management of human as well as budgetary and technicalresources.
phases.

They need to understand their capabilities to allocate these resources depending on the progress

Such responsibilities are widely recognized among the current supporters of ISAS explorations;however, they may be difficult for newcomers.

Therefore, suitable guidance from current supporters will be

helpful, and such a guidance system should be intentionally organized.
2.3. Priorities of the action plans
Deciding the priority of various science mission plans will be extremely difficult, while general guidelines
exist, such as a significance in solar system science or a contribution to future human residence on the Moonand Mars.

The Study Report does not propose a specific solution yet emphasizes the importance ofcontinuing debate at a free forum, which must be built with the cooperation of many academia and industries.

© 2024 by the authors. Submitted for possible open access publication under theterms and conditions of the Creative Commons Attribution (CC BY) license(http://creativecommons.org/li censes/by/4.0/).

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