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List view record 1: Introduction to Astrophysics. Episode 12, The Message in a Spectrum [efilm]List view anchor tag for record 1: Introduction to Astrophysics. Episode 12, The Message in a Spectrum [efilm]
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Introduction to Astrophysics. Episode 12, The Message in a Spectrum [efilm]

2019
Starting with the spectrum of sunlight, notice that thin, dark lines are present at certain wavelengths. These lines reveal the composition and temperature of the Sun's outer atmosphere, and similar lines characterize other stars. More diffuse phenomena such as nebulae produce bright emission lin...
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