The Big Bang theory proposes that the universe began as a hot and dense singularity, a point of infinite density and temperature, about 13.8 billion years ago.
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The idea that about 13 billion years ago, everything including time, matter, space, laws, gravity, cause and effect, simply sprang out of nothing in a loud bang, seems to be a foolish thing to believe.
Nothing cannot suddenly give rise to everything. The very act of the big bang requi...
Black holes cannot be seen as they don't reflect any light.
The centre of black hole is called singularity - a point of infinite density i.e the space curvature extends to infinity.
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