As evidence supporting the Big Bang theory, what does the redshift of light from galaxies indicate?(1 point)
Responses
The universe is mainly hydrogen.
The universe is mainly hydrogen.
The universe is expanding.
The universe is expanding.
The universe is 13.8 billion years old.
The universe is 13.8 billion years old.
The universe is cooling off.
The universe is expanding.
The correct answer is: The universe is expanding.
The redshift of light from galaxies indicates that the universe is expanding. This is known as the redshift of light, where the wavelength of light from distant galaxies is stretched and appears more red than it should be. This indicates that those galaxies are moving away from us, suggesting that the universe is expanding.
The correct answer is: The universe is expanding.
Explanation: The redshift of light from galaxies is an important piece of evidence supporting the Big Bang theory. When light from distant galaxies is observed, scientists can analyze the wavelengths of that light. If the wavelengths are shifted towards longer wavelengths, it indicates that the light is redshifted. This means that the galaxies are moving away from us, and the space between galaxies is expanding. This observation supports the idea that the universe is expanding, which is a key component of the Big Bang theory.