The scientific evidence supporting the Big Bang theory includes the observation of the redshift in the light from distant galaxies, indicating that they are moving away from us and providing evidence for an expanding universe. The cosmic microwave background radiation, discovered in 1965, is another key piece of evidence that supports the Big Bang theory. This radiation is a faint remnant of the early stages of the universe, consistent with the predictions of the Big Bang model. On the other hand, the Steady State theory lacked substantial evidence compared to the Big Bang theory. The discovery of the cosmic microwave background radiation further weakened the Steady State theory, as it was unable to explain this relic radiation.
