Emily Levesque Public Talk: The Strangest Stars in the Universe

In this public lecture at the Perimeter Institute, astronomer Emily Levesque takes audiences on a journey through the history and frontiers of stellar astronomy under the theme "The Strangest Stars in the Universe." She not only reviews humanity's cognitive leap from naked-eye stargazing to observations with large telescopes, but also focuses on those bizarre celestial objects that challenge physical intuition—ranging from red supergiants on the verge of explosion and rapidly spinning neutron stars to strange star candidates that could upend existing models. The highlight of the lecture lies in how, by leveraging multi-wavelength observations and spectral analysis, we can decode the mysteries of stars' birth, evolution, and death from their "quirks," and reveal how these extreme objects in turn reshape our understanding of the fundamental laws of the universe. Levesque's delivery is vivid and humorous, translating complex astrophysical concepts into intuitive visual analogies, making it particularly suitable for students and science enthusiasts curious about the cosmos. It is recommended to familiarize yourself with the basics of stellar life cycles before watching, and to keep paper and pen handy to jot down those astonishing observational data. If you watch it with friends, sharing your picks for the "strangest star" afterward will make the experience even more enjoyable.