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There is a red shift, which means that the star is moving toward the sun.
There is a red shift, which means that the star is moving toward the sun.
There is a blue shift, which means that the star is moving toward the sun.
There is a blue shift, which means that the star is moving toward the sun.
There is a red shift, which means that the star is moving away from the sun.
There is a red shift, which means that the star is moving away from the sun.
There is a blue shift, which means that the star is moving away from the sun.
There is a blue shift, which means that the star is moving away from the sun.
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The correct inference that can be made from the spectrum readings is:
There is a red shift, which means that the star is moving away from the sun.
In astrophysics, a red shift indicates that the light from an object, such as a star, is being stretched to longer wavelengths, which typically occurs when the object is moving away from the observer (in this case, the sun or Earth). Conversely, a blue shift indicates that the object is moving toward the observer.
