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If a Galaxy is moving towards the Earth at a speed of 10% the speed of light, what wavelength would the Ha line (656.3nm) of
If a Galaxy is moving towards the Earth at a speed of 10% the speed of light, what wavelength would the Ha line (656.3nm) of Hydrogen appear to have? Group of answer choices 832.78nm 656.3nm 590.67nm 721.93nm 65.63nm
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