if a galaxy is tilted 45 degrees to my line of sight then how
much does...
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Physics
if a galaxy is tilted 45 degrees to my line of sight then howmuch does the wavelength of 21 cm shift when you move from thecenter to the edge of galaxy given a orbital speed of 220 km/s?
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For measuring the Doppler shift one needs to observe thevelocity in the line of sight For example
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