Spectroscopy Explained: How Astronomers Identify Elements in Stars
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Last Updated: October 30, 2026
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Summary
Video producer Sophia Roberts explains the basic principles behind Keep going! the next lesson and practice what you're learning: ... Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now! Arguably the most likely way we will first discover alien life on another planet will be using the power of atomic When you think of astronomy, you probably picture stunning images of galaxies and stars. But what if we told you that images only ... Well, this is weird. What are all these squiggles? Those peaks represent the wavelengths of infrared light that don't get to the ... Nuclear magnetic resonance (NMR) The video is an introduction in the principle of LIBS - laser induced breakdown How do scientists know what stars are made of when they are trillions of miles away? The answer is