The Big Bang is defined today as, everything we see in the Universe today having evolved out of a random 1 explosion of matter 2 that took place between 10 and 20 billion years ago. But the author of this paper believes the Big Bang is not a theory. Why? Because a theory is defined as, a scientific hypothesis that survives experimental testing. Then, is the Big Bang a hypothesis? No. A hypothesis is defined as, a testable statement about the natural world. Then what is the Big Bang? It is merely an idea, defined as, a personal view or estimate.
NASA’s view of the Universe through liquid helium COBE’s eyes. Colors indicate warmer (red) and cooler (blue) spots. The image is a combination of diffuse infrared, far-infrared and microwave frequencies.
History of the Big Bang
Let’s look at the history of the Big Bang. Between 1927 and 1933, the idea of the universe beginning with an explosion was first proposed, from Einstein’s equations, though Einstein [at that time] and others believed in a steady state model of the universe. The idea would be called the Big Bang, a sarcastic term, in 1944.