The Big Bang, according to the standard model of cosmology of the early universe. As part of the Big Bang theory also describes the early universe, that is, the time evolution of the universe after the Big Bang.
The Big Bang explosion is not the name of an existing space, but the common origin of matter, space and time from an initial singularity. Since there is no consistent theory of quantum gravity, there is in physics today is no generally accepted theory about the state of the universe correspond to very early times, when its density is the Planck density. Therefore, the term "big bang" to describe a formal point that is reached by considering the cosmological model of an expanding universe beyond the scope of the underlying theory of general relativity beyond. According to the standard cosmological model, the Big Bang happened about 13.7 billion years ago. The Big Bang theory is based on two basic assumptions: The first assumption is that the laws of nature are universal and thus can describe the universe with natural laws that are now close to the earth. The second assumption is that the universe is everywhere (but not at any time) for large distances in all directions look the same. This assumption is called the Copernican principle or cosmological principle. In following these basic assumptions and inferences therefrom are discussed.
So if this is right there is probably more life outside and extraterrestrials cannot be far.
definitely not in out solar system:)
返信削除so they are far away from us:)
what does it mean ``universe is everywhere but not at any time``?
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