The Big Bang theory is the prevailing cosmological model explaining the universe's origin from a singularity approximately 13.8 billion years ago, leading to its ongoing expansion. It provides a comprehensive framework for understanding the cosmic microwave background radiation, the abundance of light elements, and the large-scale structure of the cosmos.

Big Bang Theory

Big Bang theory

cosmological model

universe's origin

The singularity is a hypothetical future point where technological growth becomes uncontrollable and irreversible, resulting in unforeseeable changes to human civilization. It is often associated with the advent of superintelligent AI that surpasses human intelligence, potentially leading to profound societal transformations.

singularity

Cosmic microwave background radiation is the thermal remnant from the Big Bang, providing a snapshot of the universe when it was just 380,000 years old. It is a nearly uniform background of microwave radiation that fills the universe and is a critical piece of evidence for the Big Bang theory, offering insights into the early conditions and subsequent evolution of the cosmos.

cosmic microwave background radiation

abundance of light elements

Large-Scale Structure refers to the organization of matter on the grandest scales in the universe, encompassing galaxy clusters, superclusters, filaments, and voids. It reveals the cosmic web pattern formed by dark matter and baryonic matter, providing insights into the universe's formation and evolution governed by gravitational forces and dark energy.

large-scale structure

The expansion of the universe refers to the observation that galaxies and other cosmic structures are moving away from each other, suggesting that the universe has been growing since the Big Bang. This phenomenon is supported by the redshift of light from distant galaxies and is a fundamental aspect of modern cosmology, indicating that space itself is stretching over time.

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