First Lecture of “Stars and Planets”

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Abstract

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In this opening lecture, we will embark on a broad exploration of what stars are, why they matter, and how they shape our understanding of the universe. We will begin by defining the fundamental physical properties that distinguish stars from other celestial objects, then examine their significance, from powering planetary systems to tracing the history and evolution of galaxies. Building on these concepts, we will introduce the observational tools astronomers use to study stars, including the techniques for measuring their distances, luminosities, and apparent brightness. By the end of this lecture, students will gain the framework for interpreting astronomical observations and for understanding how stars fit into the broader cosmic landscape and influence our everyday life.

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About the Speaker

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Dr. Li earned her bachelor’s degree in Astrophysics from Caltech and her Ph.D. degree in Astronomy and Astrophysics from Harvard. She subsequently joined the Harvard Society of Fellows as a Junior Fellow before beginning her faculty appointment in the School of Physics at Georgia Tech, where she is now an Associate Professor.

Please click to register in advance for this lecture by 10 December 2025 (Wednesday), 2:00 pm: https://ntu-sg.zoom.us/meeting/register/Gkal1yIcRfumZbrZdGtRVw .