Which sample spectra of light is blue-shifted, or moving towards us on Earth? On Earth in a laboratory A B 10 O O O b < B A

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Which sample spectra of light is blue-shifted, or moving towards us on Earth?
On Earth in a laboratory
A
B
10
O O
A
O b B
Transcribed Image Text:Which sample spectra of light is blue-shifted, or moving towards us on Earth? On Earth in a laboratory A B 10 O O A O b B
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