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This Concept Map, created with IHMC CmapTools, has information related to: Doppler-Astronomy, Doppler effect is a change in frequency, light waves emited from galaxies, change in frequency showed in red shift, galaxies are expanding, red shift which show how galaxies, Doppler effect refers to all types of waves, the big bang theory which is studied in astronomy, blue shift which show how galaxies, change in frequency showed in blue shift, expanding which is explained in the big bang theory, all types of waves for example light waves