At its simplest, it says the universe as we know it started with an infinitely hot, infinitely dense singularity, then inflated — first at unimaginable speed, and then at a more measurable rate — over the next 13.8 billion years to the cosmos that we know today.
What are the main features of the big bang theory?
big-bang model, widely held theory of the evolution of the universe. Its essential feature is the emergence of the universe from a state of extremely high temperature and density—the so-called big bang that occurred 13.8 billion years ago.
What are the two main points of the big bang theory?
The Big Bang theory offers a comprehensive explanation for a broad range of observed phenomena, including the abundances of the light elements, the CMB, large-scale structure, and Hubbles law. The theory depends on two major assumptions: the universality of physical laws and the cosmological principle.
What are the 4 main phases of Big Bang theory?
The temperature of the fireball drives the resulting mix of particles and radiation, and we can divide the Universe evolution into four stages; heavy particle era; light particle era; a radiation era and the present day era of matter. As the Universe expands its temperature and density decline.
How does Big Bang Theory affect us?
Explanation: The Big Bang essentially formed the entire universe that we know and all the elements, forces, stars and planets in it. More specially, most of the hydrogen and helium in the universe today was formed during the early days of the Big Bang. Hydrogen is a key element in the organic chemicals of life.
Was the Big Bang faster than light?
1. The Big Bang itself expanded much faster than the speed of light. But this only means that “nothing can go faster than light.” Since nothing is just empty space or vacuum, it can expand faster than light speed since no material object is breaking the light barrier.
How is matter created?
When high-energy photons go through strong electric fields, they lose enough radiation that they become gamma rays and create electron-positron pairs, thus creating a new state of matter.