GK
BIG BANG THEORY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Their composition
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Their movement
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The number of planets around them
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Their temperature
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Detailed explanation-1: -A stellar spectrum can reveal many properties of stars, such as their chemical composition, temperature, density, mass, distance and luminosity.
Detailed explanation-2: -A star’s spectrum contains information about its temperature, chemical composition, and intrinsic luminosity. Spectrograms secured with a slit spectrograph consist of a sequence of images of the slit in the light of the star at successive wavelengths.
Detailed explanation-3: -The most common method astronomers use to determine the composition of stars, planets, and other objects is spectroscopy. 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.