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| Description: Spectral Line Motion in Binary Star Systems The diagrams at the top indicate the positions and motions of the stars, labeled A and B, relative to Earth. Below each diagram is the spectrum we would observe for these two stars at each stage. The changes in colors (wavelengths) of the spectral lines are due to changes in the stars’ Doppler shifts, as seen from Earth Picture Stats: Views: 1020 Filesize: 185.64kB Height: 897 Width: 1350 Source: https://biology-forums.com/index.php?action=gallery;sa=view;id=18397 |