[B-AO01_28AM1] Astrobiology: Origins, Evolution, Distribution of Life

[BAO01-06] 国際宇宙ステーション曝露部での微粒子捕集、微生物有機物曝露実験：たんぽぽ

*山岸 明彦¹、横堀 伸一¹、矢野 創²、橋本 博文²、今井 栄一³、田端 誠²、河合 秀幸⁴、薮田 ひかる⁵、東出 真澄⁶、小林 憲正⁷、三田 肇⁸ (1.東京薬科大学生命科学部、2.JAXA宇宙科学研究所、3.長岡技術科学大学生物系、4.千葉大学理学研究科、5.大阪大学大学院理学研究科、6.JAXA研究開発本部、7.横浜国立大学、8.福岡工業大学工学部)

キーワード：パンスペルミア仮説, 微生物, 有機物, エアロゲル, 宇宙曝露実験

Tanpopo, a dandelion in Japanese, is a plant species whose seeds with floss are spread by wind. We propose this mission to examine possible interplanetary migration of microbes, and organic compounds at the Exposure Facility of Japan Experimental Module (JEM: KIBO) of the International Space Station (ISS). The Tanpopo mission consists of six subthemes: Capture of microbes in space (Subtheme 1), exposure of microbes in space (Subtheme 2), analysis of organic compounds in interplanetary dust (Subtheme 3), exposure of organic compounds in space (Subtheme 4), measurement of space debris at the ISS orbit (Subtheme 5), and evaluation of ultra low-density aerogel developed for the Tanpopo mission (Subtheme 6). 'Exposure Panel' for exposure of microbes and organic materials and 'Capture Panels' for capturing micro particles with aerogel will be launched. The panels will be placed on the Exposed Experiment Handrail Attachment Mechanism (ExHAM) in the ISS. The ExHAM with the panels will be placed on the Exposure Facility of KIBO (JEM) with the Japanese robotic arms through the airlock of KIBO. The panels will be exposed for more than one year and will be retrieved and returned to the ground for the analyses.