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Unformatted text preview: o Core temperature: 15 million K (Kelvin add 273 to Celcius) 0 degrees K: can’t go lower, absolute scale • The Solar Exterior o We observe the Sun’s atmosphere o The sun’s atmosphere has 3 layers o Lowest layer is the photosphere: layer we “see” Produces visible light o Just above the photosphere is the chromosphere (ultraviolet light) o Above the chromosphere is the corona (UV/X-Ray radiation) o Only external part of any star we can observe o Can see detail of sun, good opportunity for us to learn about stars Have to indirectly determine what’s going on in the interior...
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This note was uploaded on 03/16/2011 for the course ASTRO 2 taught by Professor Corcoran during the Spring '11 term at GWU.
- Spring '11