Uploaded September 2021 | Updated September 2026, 3 weeks ago

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The unedited first half of Astra's guest lecture, presented over Zoom to a class of high schoolers from around the world attending the University of Chicago's Summer Immersion program's "Physics of Stars" Class. Astra specifically discusses the process of Nuclear Fusion which powers stars and allows them to balance out gravity and sustain hydrostatic equilibrium.

No costumes or dirty jokes in this one -- just a straight-up science lecture from the actress who plays Astra with a bit of humor. This lecture was targeted at high-achieving high school students, and most of the material in this lecture is also covered by our "Lifecycle of a Star" and "Nuclear Physics" videos. To preserve the privacy of the students, our discussion about science communication most likely won't be uploaded publicly.

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