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Jan 8, 2020 · But new research led by astronomer Eric Lerner disputes the Big Bang, claiming that recent observations of light elements in the universe contradict the assumptions that support the theory....
- Passant Rabie
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What is the Big Bang theory of the universe?
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Did the universe start with a big bang?
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The big-bang theory of the universe is derived from Albert Einstein’s general theory of relativity and the idea that the universe expanded from a miniscule dense collection of energy called a singularity. There was no bang, just a vast expansion of extremely condensed material.
The Big Bang is a physical theory that describes how the universe expanded from an initial state of high density and temperature. It was first proposed as a physical theory in 1931 by Roman Catholic priest and physicist Georges Lemaître when he suggested the universe emerged from a "primeval atom".
- 1 min
- Denise Chow,Scott Dutfield
- How it all started. The Big Bang was not an explosion in space, as the theory's name might suggest. Instead, it was the appearance of space everywhere in the universe, researchers have said.
- The universe's first growth spurt. When the universe was very young — something like a hundredth of a billionth of a trillionth of a trillionth of a second (whew!)
- Too hot to shine. Light chemical elements were created within the first three minutes of the universe's formation. As the universe expanded, temperatures cooled and protons and neutrons collided to make deuterium, which is an isotope of hydrogen.
- Let there be light. About 380,000 years after the Big Bang, matter cooled enough for electrons to combine with nuclei to form neutral atoms. This phase is known as "recombination," and the absorption of free electrons caused the universe to become transparent.
Jul 1, 2019 · Virtually all astronomers and cosmologists agree the universe began with a “big bang” — a tremendously powerful genesis of space-time that sent matter and energy reeling outward.
Apr 22, 2018 · Here are five pieces of evidence for the Big Bang: #1: The night sky is dark Imagine for a moment that we lived in a perfectly infinite universe, both in time and space.
Nov 18, 2013 · Almost all astronomers agree on the theory of the Big Bang, that the entire Universe is spreading apart, with distant galaxies speeding away from us in all directions.
