Labels:bulletin board | daily | encyclical | fence | poster | sky | skyscraper OCR: ents are determine exactly which ere. present in the star's atm omers began to In the 1920s when other galaxies, look at the spectra of sta culiar there they found something me sets of missing were the same character galaxy but colors as for stars in our me relative they were all shifted by the spectrum. amount touard the red of this, we To understand the implic pler effect. must first understand the nsists of we have seen. visible lig fluctuations or waves, quency (or electromagnetic field. of light is number of waves per four extremely high, ranging per second hundred million million ght are what The different frequenci toward impl uderstand iwaves seven millior diferent
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