The Theory Of The Universe

1272 Words Mar 2nd, 2016 6 Pages
The universe is all the existing matter, space, and energy as a whole. Scientists believe that the universe is now around 10 billion light years in diameter. However, scientists are now arguing over how the universe began, and how the universe will end.

One of the most popular, and most reasonable, theory is the Big Bang. This theory posits that the universe was in a bubble a thousand times smaller than a pinhead. Then, out of nowhere, it expanded. The Big Bang wasn’t an explosion; it was the universe expanding through emptiness. There is no such thing as “outside the universe”, the universe is all there is. Time, space, and matter all began when the Big Bang occurred. In a fraction of a second, the universe grew from smaller than a single atom to bigger than a galaxy. And it kept on growing at a fantastic rate. In fact, that rate is accelerating faster and faster. It is still expanding to this day.

One alternative theory is the Steady State. An early rival to the Big Bang, the Steady State posits the continuous creation of matter throughout the universe to explain its apparent expansion. This type of universe, however, would be infinite, with no beginning nor end. A mountain of evidence found since the mid-1960s indicates that this theory was incorrect and disproven.

Another alternative theory is the Eternal Inflation theory. After the Big Bang, the universe expanded rapidly during a brief period known as inflation. The Eternal Inflation Theory posits that inflation…
Open Document