Multiple Choice
You observe the spectrum of two stars.Star A has an emission line from a known element at 600 nm.Star B has emission lines from the same atom, but the emission line is occurring at 650 nm.One possible explanation for this observation is that star A is
A) cooler than star B.
B) farther away from us than star B.
C) moving toward us faster than star B.
D) made of different elements than star B.
E) larger than star B.
Correct Answer:
Verified
Correct Answer:
Verified
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