How can astronomers use spectral analysis to determine the composition of nebula

Each element absorbs light at specific wavelengths unique to that atom. When astronomers look at an object's spectrum, they can determine its composition based on these wavelengths. The most common method astronomers use to determine the composition of stars, planets, and other objects is spectroscopy

Explanation:

Each element absorbs light at specific wavelengths unique to that atom. When astronomers look at an object's spectrum, they can determine its composition based on these wavelengths. The most common method astronomers use to determine the composition of stars, planets, and other objects is spectroscopy

Explanation:

Using special equipment like a spectrograph or a spectroscope, astronomers can split light from space into a spectrum and examine its spectral lines to infer what compounds are emitted or absorbed.  It was by using spectroscopy that we discovered the first extrasolar planets

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