An Astronomer takes a photograph of the spectrum of a star that contains both emission and absorption lines. These lines can be used to:
A) Identify specific elements that are present in the star
B) The number of free neutrons in the core of the
C) The parallax of the star
D) The number of planets around a star
Answers: 1
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An Astronomer takes a photograph of the spectrum of a star that contains both emission and absorptio...
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