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This is one of the most challenging questions about the origin of the universe. The Big Bang theory doesn’t address what existed before the universe began expanding, as our current understanding of physics doesn’t apply to the universe at extremely high densities and energies. Some theories, such as the multiverse hypothesis, propose that our universe is just one of many universes that exist in a vast multidimensional space. origin of the universe questions and answers pdf
Dark matter and dark energy are two mysterious components that make up around 95% of the universe’s mass-energy budget. Dark matter is thought to be an invisible form of matter that helps hold galaxies and galaxy clusters together, while dark energy is a type of energy that drives the acceleration of the universe’s expansion. While we don’t know much about these components, scientists continue to study their properties and behavior. The This is one of the most challenging