Cheng An Hsieh

Astronomy | Science Communication | Writing

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Cheng An Hsieh

About Me

I am an undergraduate student at National Taiwan University with broad research interests, primarily focused on astronomical data analysis and Planetary Science.

As a Founder of Hoshiko Plan (NGO for STEM education) and member of astronomy club, I am passionate about science communication.

Lighting up the starry sky in the dark of night.

Education

  • National Taiwan University, Undergraduate in Department of Physics (Sep. 2023 - Jun. 2027 Expected)
  • Double major in Data Science and Applications in Planetary Science (Sep. 2024 - Jun. 2027 Expected)

Research Projects

Venus Atmosphere

Atmospheric Dynamics on Venus

Developed a 2D chemical transport model (CTM) and coupled the dynamics and photochemistry to simulate the D/H vertical profile on Venus atmosphere. (Caltech, Advisor: Yuk L. Yung)

image credit: NASA

Exoplanet WASP-193b

Atmospheric Chemistry of WASP-193b

Simulated the ultra-low density exoplanet's vertical chemical profile using the VULCAN code to predict unique observational signatures for JWST. (ASIAA, Advisor: Shang-Min Tsai)

image credit: NASA

AGN

Inferring Obscured Cosmic Black Hole Accretion History

Using data from the JWST/MIRI CEERS Survey to study black hole accretion history of obscured active galactic nuclei (AGNs). (Advisor: Tomotsugu Goto)

Binary Asteroids

Identifying Binary Asteroids Using Machine Learning

Developing machine learning approaches to identify binary asteroids from lightcurve data in the FOSSIL survey. (Advisor: Chan-Kao Chang)

Publications & Presentations

Publications

The Influence of Transport on Chemistry in the Middle Atmosphere of Venus
C.A. Hsieh, T.J. Liao, F.P. Mills, C.D. Parkinson, Y.L. Yung
AGU Fall Meeting (2025)
Obscured Cosmic Black Hole Accretion History from AGN Found by JWST/MIRI CEERS Survey
C.A. Hsieh, T. Goto, C.T. Ling, S.J. Kim, T. Hashimoto, C.C. Chien, Y.A. Chen
Publications of the Astronomical Society of Australia (2025)

Conference Participation

Oral Presentation: The Influence of Transport on Chemistry in the Middle Atmosphere of Venus
2025 AGU Annual Meeting (Dec. 2025)
Poster: Modeling Atmospheric Chemistry of the Ultra Low Density Exoplanet WASP-193b
2026 Annual Meeting of the Physical Society of Taiwan (Jan. 2026)
Poster Award (Honorable Mention)
Poster: Identifying Binary Asteroids Using Machine Learning with Simulated Lightcurves and FOSSIL Survey Data
2025 Annual Meeting of the Astronomical Society of Republic of China (May. 2025)
Poster: Inferring Obscured Cosmic Black Hole Accretion History from AGN Found by JWST/MIRI CEERS Survey
2025 Annual Meeting of the Physical Society of Taiwan (Jan. 2025)

Presentations and Slides

The Influence of Transport on Chemistry in the Middle Atmosphere of Venus
2025 Caltech SURF Seminar

Awards & Honors

Recognition for academic and scientific achievements

University (National Taiwan University)

2026 Annual Meeting of the Physical Society of Taiwan β€” Poster Award (Honorable Mention)
Awarded for top 10% in scientific presentation and research content. (2026)
Caltech Summer Undergraduate Research BaBar Fellow
Caltech SURF Fellow, awarded to NTU undergraduate (Jun. 2025 - Aug. 2025)
Taiwan Astronomical ObserVatories Alliance (TARA)
Summer Research Internship, awarded to Taiwanese undergraduate (Jul. 2024 - Aug. 2024)
First Prize, Competition for Innovative Experiment in General Physics
Designed experiment investigating the phenomenon of a marble on a rotating track
2025 NASA Hackathon SpaceApps Challenge
Silver Award (Kaohsiung)
2023 NASA Hackathon SpaceApps Challenge
CAVES Cosmos Communicator Award (Taichung)
2025 Student Altruism Award
National Taiwan University

High School

Silver Medal, International Earth Science Olympiad - Data Mining Test
Personal ranked 25th
Silver Medal, International Earth Science Olympiad - National Team Field Investigation
Evaluating Human Impacts and Marine Environment by Listening to Snapping Shrimps
Third Prize, Taiwan International Science Fair
Investigating the Cause and Distribution of Binary Asteroids

Activities & Outreach

Science Communication, Education, and Community Engagement

🌟 Hoshiko Plan

Lighting up rural corners with the power of astronomy and nature education.

  • Hoshiko Plan, Founder
  • NGO for STEM education
  • Bridge educational gaps by Nature and astronomy
Hoshiko Plan

🎀 POP-Science Talks

Some talks and presentations.

  • Astronomy, Asteroids and fall in love
View Talks

πŸ”­ Astronomy Clubs & Student Association

Leading astronomy organizations to foster community engagement.

  • President, HCHS Astronomy Club (Sep. 2020 - Present)
  • President, NTU Astronomy Club
  • Vice President, Student Association of Physics Department (Sep. 2023 - Jun. 2025)
  • Organizer of stargazing events and observational campaigns
Club Activities

πŸ“ Science Communication

Writing and sharing knowledge to inspire curiosity in astronomy.

  • Popular science articles for γ€ŠScience Monthly》 (longest-standing popular science magazine in Taiwan)
  • First Prize, NTU Literature Award Short Story Category
View Articles

πŸš€ EASY Team Member

Contributing to the EASY Astronomy and Earth Science promotion team.

  • Published some articles on social media.
  • Present the beauty of astronomy and earth science.
Our Facebook

πŸ–ŠοΈ Write

Some short stories here.

  • First Prize, NTU Literary Award
  • Newcomer Award, United lifestyle
UNITAS

Contact Me

Feel free to contact for questions, collaborations or opportunities

πŸ“§

Email

didymos65803@gmail.com

🏒

Address

Department of Physics, National Taiwan University
No. 1, Sec. 4, Roosevelt Road, Taipei, Taiwan

πŸ”—

Social Media

Find me on GitHub, Facebook, Instagram, and Twitter!