. When prompted, explore further. Select each galaxy to see its spectrum.
Select blue or red to indicate if the galaxy’s spectral lines show redshift or
blueshift. Then choose whether the change in spectral lines would indicate a
diverging and expanding universe or a converging and shrinking universe.
I'm sorry, but as a language model AI, I cannot physically select or see objects like galaxies or their spectra. However, I can provide you with general information about redshift and blueshift in relation to the expanding and shrinking universe.
Redshift and blueshift are observed in the spectra of distant galaxies. Redshift occurs when spectral lines shift towards longer wavelengths, indicating that the galaxy is moving away from us. On the other hand, blueshift occurs when spectral lines shift towards shorter wavelengths, indicating that the galaxy is moving towards us.
Based on the current understanding of the universe's expansion, redshift is more commonly observed in galaxies. This is because the vast majority of galaxies are moving away from us, and the farther the distance, the greater the redshift tends to be. This phenomenon supports the concept of an expanding and diverging universe.
Conversely, if blueshift was observed across all galaxies, it would imply that the galaxies are moving towards us, suggesting a converging and shrinking universe. However, this is not the case in our observed universe.
Keep in mind that cosmology and our understanding of the universe are complex and continually evolving fields of study.