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.

Question

06-03-2021
Biology

Answered

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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.

Sagot :

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