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Use the spectrum readings from the sun (upper) and a star (lower) to answer the question.

Which inference can be made from the spectrum readings?

(1 point)

There is a blue shift, which means that the star is moving away from the sun.

There is a redshift, which means that the star is moving toward the sun.
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There is a redshift, which means that the star is moving away from the sun.

There is a blue shift, which means that the star is moving toward the sun.

Visible light is a spectrum of colors, which is clear to anyone who has looked at a rainbow. When an object moves away from us, the light is shifted to the red end of the spectrum, as its wavelengths get longer. If an object moves closer, the light moves to the blue end of the spectrum, as its wavelengths get shorter.

Explanation: Redshift and blueshift describe how light shifts toward shorter or longer wavelengths as objects in space (such as stars or galaxies) move closer or farther away from us. The concept is key to charting the universe's expansion.