Gongjindan (공진단)

Gongjindan (공개행사 진행준비단) is the Seoul National University Astronomy Department’s student-run group for public astronomy outreach. I have been a member since September 2022 and have helped organize 20+ events, contributing 100+ hours of public outreach.

Programs include planetarium lectures and sky shows at Gwan-heo Cosmos Hall, observatory visits at the Seoul National University 1m telescope, and other open events for middle-school students and the general public, as part of the university’s “research outcomes for society” initiative.

Gongjindan homepage link (for details)

Public lecture: “Cities of Light” (18 July 2026)

On 18 July 2026 I gave a 60-minute public lecture, “Cities of Light: A Census of the Universe's Most Crowded Neighborhoods” (「빛의 도시들」), under the planetarium dome at Gwan-heo Cosmos Hall, for an audience of middle- and high-school students and the general public. The talk was based on my first-author paper, The Stellar Mass Function for Nine Massive Galaxy Clusters in the Local Universe (Park et al. 2026, ApJ).