How fast and in what direction must galaxy A be moving relative to us if an absorption line found at 550 nm (green) for a stationary galaxy is shifted to 450 nm (blue) for A? (10
How fast and in what direction must galaxy A be moving relative to us if an absorption line found at 550 nm (green) for a stationary galaxy is shifted to 450 nm (blue) for A? (10
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How fast and in what direction must galaxy A be moving relative to us if an absorption line
found at 550 nm (green) for a stationary galaxy is shifted to 450 nm (blue) for A? (10
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