How old is the Universe?
The universe is about 13.7 billion years old. At its beginning it looked nothing like it does today. Yet, everything in today's Universe did exist in some form back then. It all started with the Big Bang, a kind of explosion that would not only go on to produce all the matter in the Universe but also marked the start of time.
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Creation of Universe!
01. At the start, the Universe was a hot and dense ball of radiation energy.
02. In one-thousandth of a second, tiny radiation particles produced tiny particles of matter. These combined to form the first ever chemical elements, hydrogen and helium.
03. Some regions of the young Universe contained slightly more hydrogen and helium than others. These shrank to form the first stars.
04.Nuclear reactions inside the stars produced many other chemical elements, including carbon and oxygen.
05. The elements in the Universe today were produced from elements created in the Big Bang.
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