GK
THE UNIVERSE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Average diameter
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Distance from Earth
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Overall shape
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Chemical composition
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Detailed explanation-1: -Astronomers can heat elements here on Earth and observe the wavelengths of light, which the elements emit. By then analyzing the light from distant stars, the astronomers can determine what property of these stars? observations in different wavelengths provide different information about stars.
Detailed explanation-2: -Spectroscopy can be used to infer the temperature and composition of a star through studying the patterns of dark absorption lines found in the spectrum of the star. It’s similar to a fingerprint analysis. It is the only way we can observe things that are far away.
Detailed explanation-3: -The light might be sent to a spectrograph, which is a very sensitive instrument that breaks the incoming light into its component wavelengths. It produces “spectra", graphs that astronomers use to understand the chemical properties of the object.