Infinite Horizons: Apr. 17th “Opening New Horizons with the L4 Mission: Vision and Plan”

Speaker: Dr. Kyung-Suk Cho (Korean Astronomy and Space Science Institute)
Apr. 17th, 2024
4pm, Beijing time
Watch it on Zoom


We have the pleasure to host the next Infinite Horizons’ seminar on April 17th, 2024. Our host will be Dr. Kyung-Suk Cho from the Korean Astronomy and Space Science Institute. Dr. Cho will talk about Opening New Horizons with the L4 Mission.

Seminar’s abstract:

The Sun-Earth Lagrange point L4 is considered as one of the unique places where the solar activity and heliospheric environment can be observed in a continuous and comprehensive manner. The L4 mission affords a clear and wide-angle view of the Sun-Earth line for the study of the Sun-Earth and Sun-Moon connections from he perspective of remote-sensing observations. In-situ measurements of the solar radiation, solar wind, and heliospheric magnetic field are critical components necessary for monitoring and forecasting the radiation environment as it relates to the issue of safe human exploration of the Moon and Mars. A dust detector on the ram side of the spacecraft allows for an unprecedented detection of local dust and its interactions with the heliosphere. The purpose of the present paper is to emphasize the importance of L4 observations as well as to outline a strategy for the planned L4 mission with remote and in-situ payloads onboard a Korean spacecraft. It is expected that the Korean L4 mission can significantly contribute to improving the space weather forecasting capability by enhancing the understanding of heliosphere through comprehensive and coordinated observations of the heliosphere at multi-points with other existing or planned L1 and L5 missions.

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Livestream Link:

(Our Infinite Horizons seminars are usually host on the third Wednesday of the month)


About the speaker:


Dr. Kyung-Suk Cho is a Principal Scientist at the Korea Astronomy and Space Science Institute, and a Professor at the Department of Astronomy and Space Science in the University of Science and Technology. He was a PI of the KASI Space Weather Center project and a leader of theSolar and Space Weather Group in KASI. He served as the vice president of Korea Astronomy and Space Science (Feb. 2018 ~ Jul. 2019), the Korean Representative of ISWI (Jan. 2023 ~), and the IAU Bureau of SCOSTEP (Oct. 2015 ~ Sep. 2023). Over the past decade, he has engaged in solving the problems of the origin of solar coronal shock and its impact on Earth. He had been served as a director of Space Science Division in KASI (Feb. 2016 ~ Jan. 2018) and now PI of feasibility study of Korea leading L4 mission (Jun. 2022 ~ Dec. 2024). Dr. Kyung-Suk Cho has authored and coauthored more than 150 SCI (refereed) articles in the research field of Solar corona, Solar Eruption, Coronal Mass Ejections, Coronal Shock, and Type II solar radio burst as well as high resolution study on waves and oscillations in the solar chromosphere and solar corona using Goode Solar Telescope, Hinode, IRIS, and SDO. Kyung-Suk received his Bachelor’s degree in Astronomy and Space Science from the Kyung- Hee University in 1992, Master’s degree in Solar Physics from the Kyung-Hee University in 1996, and the Doctorate in Solar Physics from the Kyung-Hee University in 2003.

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