The exact cause of the Big Bang, which is the prevailing scientific explanation for the origin of the universe, is still a subject of ongoing research and investigation. The Big Bang theory states that the universe began as a hot, dense, and extremely small singularity, and it has been expanding and evolving ever since.
According to the theory, the universe started from a state of incredibly high energy and density, where all matter, energy, and space itself were compressed into an extremely small point. However, the precise mechanism or cause of this initial singularity is not currently understood.
At such extreme conditions, our current understanding of physics, particularly the laws of gravity and quantum mechanics, breaks down. To gain a deeper understanding of what happened at the moment of the Big Bang, scientists rely on theoretical frameworks such as quantum cosmology and string theory, but there is still much that remains uncertain.
Research into the origins of the universe, including the cause of the Big Bang, continues to be an active area of scientific exploration and is pursued through various avenues, such as particle physics experiments, cosmological observations, and mathematical modeling.