천문학논총 (Publications of The Korean Astronomical Society)

  • 제38권2호
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  • Pages.25-36
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  • 2023
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  • 1225-1534(pISSN)
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  • 2287-6936(eISSN)
한국천문학회 (The Korean Astronomical Society)
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우주생명현상과 성간천체 탐사 전망

THE PROSPECT OF INTERSTELLAR OBJECT EXPLORATIONS FOR SEARCHING LIFE IN COSMOS

  • Minsun Kim (Korea Astronomy and Space Science Institute) ;
  • Ryun Young Kwon (Korea Astronomy and Space Science Institute) ;
  • Thiem Hoang (Korea Astronomy and Space Science Institute) ;
  • Sungwook E. Hong (Korea Astronomy and Space Science Institute)
  • 투고 : 2022.12.22
  • 심사 : 2023.03.06
  • 발행 : 2023.08.31
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초록

Since interstellar objects like 1I/'Oumuamua and 2I/Borisov originate from exoplanetary systems, even if we do not visit the exoplanetary systems, flyby, rendezvous, and sample return missions of interstellar objects can provide clues to solve the mysteries of cosmic life phenomena such as the origin of exoplanetary systems, galactic evolution, biosignatures (or even technosignatures), and panspermia. In this paper, we review space missions for interstellar object exploration in the stage of mission design or concept study such as Project Lyra, Bridge, Comet Interceptors, and LightcraftTM. We also review space missions, OSIRIS-REx and NEA Scout, designed for Near Earth Asteroids(NEA) explorations, to investigate the current state of basic technologies that can be extended to explore interstellar objects in a velocity of ~ 6AU/year. One of the technologies that needs to be developed for interstellar object exploration is a spacecraft propulsion method such as solar sail, which can catch up with the fast speed of interstellar objects. If this kind of propulsion becomes practical for space explorations, interstellar object explorations will mark a new era and serve as a driving force to provide evidences of cosmic life.

키워드

과제정보

본 연구는 정부(과학기술정보통신부)의 재원으로 한국천문연구원 주요사업 및 기타사업의 지원을 받아 수행되었습니다 (우주생명현상탐색 기획연구(No. 2022E83090), 우주생명현상탐색(No. 2021184005), 우주거대구조를 이용한 암흑우주연구(No. 2022186903), 고밀도 천체의 물질 방출 및 자기장 연구(No. 2023184007)). 우주생명현상 탐색 연구를 함께 수행하고 있는 동료들(LiCE Team; 강현우, 김윤종, 손봉원, 신민수, 이충욱, 정선주, 정태현, 한정열)과 익명의 심사위원께 감사드립니다.

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