Beginning of universe. According to this idea, the universe began around 13.

Beginning of universe. May 14, 2024 · Origin of the universe: This article explores various theories about how the universe got started and how it will end. Subsequent calculations have dated this Big Bang to approximately 13. The current accepted model of the history of the universe is based on the concept of the Big Bang: the universe started hot and dense then expanded and cooled. The energy of photons is determined by their temperature, and calculations show that in the hot, early universe, photons had so much energy that when they collided … Jul 26, 2025 · The universe’s structure today is a direct consequence of its beginning. As the universe began to cool during the first few minutes, protons and neutrons began to form. The term Big Bang describes the initial expansion of all the matter in the universe from an infinitely compact state 13. 7 billion years ago. For nearly 400,000 years, the entire cosmos was opaque, which means we have no direct observations of anything that happened during that time. Each collision triggers a new Big Bang, creating a cycle of universes with no definitive beginning. New ideas and major discoveries made during the 20th century transformed cosmology – the term for the way we conceptualize and study the universe – although much remains unknown. 2gg luqdei1n hau w3yh uewrw1 xedqsj2 gagby ym3 oidq cl4