How does spectroscopy provide evidence for the Big Bang theory?
1.The intensities of peaks show that galaxies are moving away from each other
2. The red shift shows that galaxies are moving towards each other.
3. The red shift shows that galaxies are moving away from each other.
4.The intensities of peaks show that galaxies are moving towards each other
3. The red shift shows that galaxies are moving away from each other.
Spectroscopy involves the study of the electromagnetic spectrum emitted by objects in space. When analyzing the spectra of distant galaxies, astronomers noticed a shift towards the red end of the spectrum. This shift, called the redshift, is evidence that the galaxies are moving away from us and from each other, consistent with the expansion of the universe predicted by the Big Bang theory. The greater the distance between the observer and the galaxy, the greater the redshift.