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Question 1 of 10 How do we know the sun rotates? OA. Both sides are red-shifted. OB. Because Earth rotates. OC. Both sides are blue-shifted. OD. One side is blue-shifted and the other side is red-shifted.
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Question 1 of 10

How do we know the sun rotates?
OA. Both sides are red-shifted.
OB. Because Earth rotates.
OC. Both sides are blue-shifted.
OD. One side is blue-shifted and the other side is red-shifted.
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User Leonardo
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