The article explores humanity's quest to understand the Universe's origins, detailing the scientific consensus around the hot Big Bang theory. First proposed by Georges Lemaître and later expanded by George Gamow, the theory posits that the Universe began in an extremely hot, dense state before expanding to its present form. Key observations, such as the cosmic microwave background radiation, support this model. However, the Big Bang does not describe the Universe's very inception, prompting theories of cosmic inflation to address the conditions preceding the Big Bang.
The Big Bang theory suggests that the Universe began from a hot, dense state and has been expanding ever since, supported by significant observational evidence.
The Universe was once smaller, denser, and hotter, leading to the cosmic microwave background and structures observed today.
The Big Bang theory explains how atomic nuclei and neutral atoms formed in the early Universe, setting the stage for star and galaxy formation.
Despite its successes, the Big Bang does not explain the Universe's initial state, leading to considerations of cosmic inflation as a precursor.
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