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Mostly by spectrographic observation.

Every distinct element radiates exact and specific frequencies of light. By taking a tiny sample of the element and heating it to "glowing hot", we can measure the spectrum of the light that this element gives off. This is how a spectrometer works.

In a star, the elements are already at thousands of degrees, so all astronomers need to do is to analyze the spectrum; most stars have spectra that are as distinct as fingerprints to people. We can determine what elements are present, and in what proportions, with considerable accuracy.

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Jovany Nolan

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3y ago

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What can a star's spectrum tell us?

scientists can tell the stars composition and temperature from its spectrum. Hope tht helps :]


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Scientists can determine the composition of distant stars by analyzing their spectra. The light emitted by stars contains distinct absorption or emission lines that correspond to specific elements present in the star's atmosphere. By studying these spectral lines, scientists can identify the elements present in a star and determine its chemical composition.


What characteristics do scientists measure to determine the temperature and composition of stars?

Scientists measure the brightness, color, and spectral lines of stars to determine their temperature and composition. By analyzing the light emitted by stars, scientists can infer important information about their properties. The temperature of a star is usually determined by examining the peak wavelength of its emitted light, while the spectral lines reveal the elements present in the star's atmosphere.


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Yes, scientists can analyze the light emitted by stars, known as stellar spectra, to learn about their chemical composition. By studying the absorption and emission lines in the spectrum, scientists can identify the elements present in the star and their relative abundances. This information helps astronomers understand the processes happening within stars and how they evolve over time.


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How do different scientists spectra to figure out the composition of a star's outer layer?

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Can Scientists learn about the chemical composition of stars by analyzing the light they transmit.?

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