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How A Simple Discovery Changed Astrophysics Forever

This video examines the origins and development of spectroscopy in astrophysics, beginning with Newton’s prism experiments. It highlights key contributions by Fraunhofer, Kirchhoff, and Bunsen in transforming light analysis into a powerful astronomical tool. Spectroscopy now enables the study of composition, motion, and physical conditions of celestial objects. 00:00 - Intro 01:31 - Newton's Prism Experiment 02:50 - William Hyde Wollaston 03:22 - Fraunhofer 04:24 - Kirchhoff and Bunsen 05:28 - Harvard College Observatory survey 05:59 - Stellar Dynamics 07:09 - Dark Matter 08:04 - Exoplanets & Atmospheric Composition 09:26 - Quasars 10:15 - Modern Spectroscopy & space telescopes REFERENCES: Newton- Of Colours : https://www.newtonproject.ox.ac.uk/ca... Exoplanet WASP-96 b (NIRISS Transmission Spectrum) https://esawebb.org/images/weic2206a/ Radial Velocity Method of Detection of Exoplanets: https://lco.global/spacebook/exoplane... FRaunhofer: 200 years of Fraunhofer lines    • 200 years of Fraunhofer lines   Firework Colours and Electron excitation, Angels and Acid    • Firework colours and Electron Excitation   Flame test of metals:    • Flame Tests of Metals   Sodium absorption lines:    • Sodium Absorption Lines   Spectrum Demo: Continuous and Emission:    • Spectrum Demo: Continuous and Emission   #spectroscopy #astrophysics #isaacnewton #fraunhofer #kirchhoff #Bunsen #StarlightAnalysis #astronomy #physics #spacescience #LightSpectrum #astronomyfacts #cosmos #astrophysicsexplained #ScientificDiscovery #TelescopeScience #exoplanets #StellarSpectra #UniverseExploration #ScienceHistory