(This article is in English only)

September 2025 edition of the Space Cafe Tokyo will feature the lecture ‘Was there a Rogue Planet in the Early Solar System?’ by Dr. Yukun Huang (NAOJ).

Our Solar System might have formed with one or more additional Earth-mass planets. Such a rogue planet would have left observable traces and could help explain the mysterious asteroids in the outer Solar System, such as one recently discovered with the Subaru Telescope. Join us with Yukun Huang (NAOJ) to explore the dynamic history of our Solar System!

Speaker info:
Yukun Huang is a postdoctoral fellow at CfCA, NAOJ, working with Prof. Eiichiro Kokubo. His research focuses on dynamical astronomy, including celestial mechanics, Kuiper Belt objects, and Solar System formation. He earned his PhD in Astronomy from UBC, Canada (2023), after completing an MSc in astrodynamics at Tsinghua University, China (2019).

Date: Thursday, 25 September 2025
Time: 20:00 (doors open at 19:30)
Venue: Good Heavens, Shimokitazawa
Info: https://www.facebook.com/events/822263337632228/

Space Cafe Tokyo is hosted by members of ELSI, Kavli-IPMU, UTokyo, and NAOJ. Space Cafe Tokyo brings science a bit closer to the public in a cosy environment in Shimokitazawa. The event is held monthly where we invite experts, scholars, and students in the field of space and astronomy-related to present a research project or a topic that they are working on.