Sean Carroll's Mindscape: Science, Society, Philosophy, Culture, Arts, and Ideas 204 | John Asher Johnson on Hunting for Exoplanets
Jul 18, 2022
Join John Asher Johnson, a Harvard astronomy professor and exoplanet expert, as he dives into the thrilling world of planets beyond our solar system. He discusses groundbreaking detection methods that have led to the discovery of thousands of exoplanets. Johnson explores the complexities of these celestial bodies, their unexpected features, and their chaotic orbits. The conversation also touches on the revolutionary Kepler mission, advancements in technology like the James Webb Space Telescope, and what these findings mean for the future of extraterrestrial life search.
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Kepler Space Telescope
- The Kepler space telescope used the transit method.
- Kepler stared at one patch of sky, finding thousands of exoplanets.
Transit Alignment Probability
- Only a small fraction of planetary systems are aligned for transit detection.
- The probability decreases with distance from the star.
Ground-Based Follow-Up
- Ground-based follow-up is important to validate exoplanet candidates.
- It confirms that signals are from planets and not other phenomena.
