Question

In your own words, explain how the radiations from space detected by Arno Penzias and Robert Wilson provides evidence for the Big Bang Theory.

Answer 1

They predict that the Universe were created in a Big Bangtoday we would see the glow of light that was released when atoms first formed, when the universe was about 300,000 years old. Since the universe has been expanding for billions of years,the light would have been redshifted by a factor of 1,000, so that it could only be detected today as microwaves. In 1964 Arno Penzias and Robert Wilson of Bell Labs announced they had identified this light, providing the strongest evidence to date in support of the Big Bang theory.