One of the strongest evidence for the expansion of the universe comes from the observation of cosmic microwave background radiation (CMB). This radiation is a faint glow that permeates the entire universe and is left over from the early stages of its formation. The CMB was discovered in 1965 by Arno Penzias and Robert Wilson, and its existence had been predicted by the Big Bang theory.
The CMB radiation is incredibly smooth and nearly uniform in all directions, but it does contain tiny temperature fluctuations or "hot" and "cold" spots. These fluctuations are key evidence for the expansion of the universe and the Big Bang. According to the Big Bang theory, these fluctuations were formed due to quantum fluctuations in the early universe. As space expanded, these small differences in density were stretched and magnified, leading to the formation of galaxies and clusters of galaxies that we observe today.
The precise measurements and detailed maps of the CMB radiation, such as those made by the Planck satellite, provide important evidence supporting the theory of an expanding universe and the Big Bang. These observations confirm the predictions made by the Big Bang theory and provide a strong backing to the idea that the universe originated from an incredibly hot and dense state about 13.8 billion years ago.
which is evidence of universe expansion that supports the big bang theory?
1 answer