Which sentence about galaxies provide evidence of the universe expansion that supports the big bang theory
Galaxies are moving away from each other
Galaxies are in constant motion.
Galaxies are moving more slowly than they have in the past.
Galaxies are moving at different speeds and in different directions
Galaxies are moving away from each other
The sentence that provides evidence of the universe expansion that supports the Big Bang theory is: "Galaxies are moving away from each other."
The sentence that provides evidence of the universe expansion that supports the Big Bang theory is: "Galaxies are moving away from each other."
Explanation: The Big Bang theory proposes that the universe began with a massive explosion approximately 13.8 billion years ago. One of the key pieces of evidence that supports this theory is the observation that galaxies in our universe are moving away from each other. Astronomers have observed that the light from galaxies is shifted towards longer wavelengths, indicating that galaxies are moving away from us and from each other. This phenomenon is known as redshift.
By measuring the speed at which galaxies are moving away from us, scientists can determine the rate of expansion of the universe. The observations have shown that galaxies that are farther away from us are moving away at faster speeds than those that are closer. This observation is consistent with the universe undergoing an expansion, which started from a single point in space and time, the Big Bang.