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The spectroscope aided Edwin Hubble in detecting redshift in galaxies, supporting the notion of an expanding universe.
Spectroscope is the tool that helped Edwin Hubble identify the redshift in the spectrum of distant galaxies. By using a spectrometer to separate colors and record the spectrum of light from galaxies, Hubble discovered the relationship between the redshift and distance of galaxies, leading to the understanding that distant galaxies are receding from us.
The Doppler shift observed in the light from galaxies indicated that they were moving away, with those farther showing greater redshifts. This discovery supported the idea of an expanding universe, a key concept in modern astronomy.
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