Exoplanets, Strange New Worlds
summary
Overview of exoplanet discoveries and measurement methods: transit photometry and radial-velocity (RV) surveys have found thousands of planets since 1995 and Kepler (2009), allowing mass and radius determinations that constrain densities and interior models. Detection challenges and precision targets are discussed (transit depths from ~1% for hot Jupiters down to ~80 ppm for Earth-size; ~10 cm/s RV precision needed for Earth analogs), and ongoing/future surveys and facilities—Kepler, TESS, PLATO, JWST, ELTs, and ARIEL—are highlighted for atmospheric spectroscopy; key findings include hot Jupiters at ~1% occurrence and ~40% of small stars hosting habitable‑zone planets.
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chapters (16)
- 0:00Exoplanets introduction
- 3:37History and speculation
- 4:41Exoplanet detection revolution
- 6:05Planetary system diversity
- 8:13Exoplanet internal composition
- 9:15Exoplanet atmospheres study
- 11:02Indirect detection methods
- 13:29Kepler mission discoveries
- 15:16Radial velocities detection
- 17:24Planet frequency in galaxy
- 18:06Habitable zone and rocky planets
- 18:49Unanswered exoplanet questions
- 19:31TESS mission relevance
- 21:14James Webb Telescope future
- 23:41Exoplanet context and learning
- 24:45Q&A
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