This is a tough question! According to the
results of scientific experiments, the universe
was created about 15 billion years ago! This
means 15,000,000,000 year ago. We can say this by
the understandings of modern science, but still
there are intriguing and complex questions.
The creation of the Universe is based on the theory of the Big Bang, and this theory says that about 15 billion years ago a tremendous explosion started the expansion of the universe. At this point, all the matter and energy of space was contained at one point. What existed before the Big Bang is completely unknown and is a matter of pure speculation.
The Big Bang was not a normal explosion but rather an explosion of space within itself, unlike an explosion of a bomb were fragments are thrown outward.
It was a scientist named Edwin Hubble who started the theory of the Big Bang. Hubble made the observation that the universe is continuously expanding. He discovered that a galaxy's velocity is proportional to its distance. Galaxies that are twice as far from us move twice as fast. Another consequence is that the universe is expanding in every direction. This observation means that it
has taken every galaxy the same amount of time to
move from a common starting position to its
current position. Just as the Big Bang explains
the origin of the universe, Hubble's observations
explain the origin of the Big Bang theory.
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