+The **Big Bang** is the leading cosmological model describing the universe's earliest known periods, from which the entire [universe](/wiki/universe) expanded from a very high-density and high-temperature state. This foundational event marks the birth of space and time, shaping the cosmic evolution we observe in [cosmology](/wiki/cosmology) today.
+## See also
+- [Cosmic Microwave Background](/wiki/cosmic_microwave_background)
+- [Expansion](/wiki/expansion)
+- [Redshift](/wiki/redshift)
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