Peering through dust clouds to the center of the galaxy
Summary
Science Friday host Flora Lichtman interviews Nobel laureate Andrea Ghez about her groundbreaking discovery of the supermassive black hole at the Milky Way's center. Ghez explains how she tracked stellar orbits to prove the object's existence, detailing the technological challenges and scientific skepticism she overcame. The discussion also covers the synergy between theory and observation, the interplay between black holes and galaxy formation, and Ghez’s passion for solving complex cosmic puzzles.
Topics discussed
Sponsor messages and podcast introductions
Introduction to Dr. Andrea Ghez and the galactic center
Defining black holes and the scientific debate
Evidence for a supermassive compact object
The multi-step experiment to track stellar orbits
Black hole formation and galaxy evolution
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The interplay between theory and observation
Handling skepticism and scientific criticism
Influence of art and family on scientific approach
Reaction to the Event Horizon Telescope image
Future questions: Gravity and quantum mechanics
Dealing with uncertainty and choosing solvable problems
Lingering questions and reflections on her career
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