Biology, 07.03.2021 01:10, Animallover100

The spectrum of a distant star contains sodium lines that are offset from their normal position, as shown. What is the most likely explanation? Sodium spectra
A. The star is relatively hot.
B. The star is relatively cool.
C. The star is moving rapidly toward us.
D. The star is moving rapidly away from us.

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The spectrum of a distant star contains sodium lines that are offset from their normal position, as...