4.5: Mission Report 4 - The Andromeda Shift
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D. Questions to be graded for accuracy
Below is a small part of the spectrum for galaxy NGC 6643, showing the Hβ (hydrogen beta) spectral line, with a rest wavelength 4860 Angstroms (1 Angstrom = 10-10 m). The top graph is that of a reference galaxy that has not been shifted. The lower graph displays the spectrum for the galaxy NGC 6643.
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