Understanding the Speed of Galaxies Through Wavelength Shifts

The video tutorial explains the relationship between the shift in wavelength of light emitted by galaxies and their velocity. It covers the concepts of redshift and blueshift, detailing how these phenomena occur when galaxies move relative to Earth. The tutorial introduces an equation that relates wavelength shift to galaxy velocity and demonstrates its application through examples. The first example calculates the shift in wavelength for a galaxy moving away from Earth, while the second example determines the speed of a galaxy using absorption spectra. The video concludes by emphasizing the significance of redshift and blueshift in understanding galaxy movement.

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