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Home Q & A Board Science-Related Homework Help Physics
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symbo symbo
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7 years ago
The spectrum of a star shows an equivalent set of dark absorption lines to those of the Sun, but with one exception: Every line appears at a slightly longer wavelength, shifted toward the red end of the spectrum.  What conclusion can be drawn from this observation?
A)   A cloud of cold gas and dust surrounds the star and is absorbing light from it.
B)   The star is moving rapidly toward the Earth.
C)   The temperature of the star's surface is higher than that of the Sun.
D)   The star is moving rapidly away from the Earth.
Textbook 
Discovering the Universe

Discovering the Universe


Edition: 7th
Authors:
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hyponoticahyponotica
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7 years ago
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symbo Author
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#2
7 years ago
This did it for me! Thank you
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#3
4 years ago
thank you!
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