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doit_the_clown doit_the_clown
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7 years ago
How are the emission and absorption lines in a star=s spectrum affected by the motion of the star?

(a)   They are blueshifted if the star is approaching the Earth, and redshifted if the star is receding from the Earth.
(b)   They are redshifted if the star is approaching the Earth, and blueshifted if the star is receding from the Earth.
(c)   They are always redshifted if a star is moving relative to the Earth.
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Discovering the Universe

Discovering the Universe


Edition: 7th
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Only two things are infinite, the universe and human stupidity, and I'm not sure about the former.

Albert Einstein
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hyponoticahyponotica
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doit_the_clown Author
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7 years ago
this is exactly what I needed
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