How does spectroscopy provide evidence for the Big Bang theory?(1 point)

Question

Responses

The intensities of peaks show that galaxies are moving away from each other.
The intensities of peaks show that galaxies are moving away from each other.

The intensities of peaks show that galaxies are moving toward each other.
The intensities of peaks show that galaxies are moving toward each other.

The red shift shows that galaxies are moving toward each other.
The red shift shows that galaxies are moving toward each other.

The red shift shows that galaxies are moving away from each other.

Answer 1

The first and last options are correct:

1. The intensities of peaks show that galaxies are moving away from each other.
- Spectroscopy allows astronomers to analyze the light emitted by galaxies. By observing the spectrum of light, they can measure the shift in wavelength, known as the redshift. The redshift indicates that the light is being stretched, indicating that galaxies are moving away from each other, supporting the expansion of the universe and the Big Bang theory.

4. The redshift shows that galaxies are moving away from each other.
- As mentioned earlier, the redshift observed in spectroscopy reveals that the light from galaxies is being stretched, indicating that they are moving away from each other. This observation aligns with the theory of an expanding universe and supports the Big Bang theory.