The Big Bang theory is widely used as the main explanation for the origin of the universe. You tell us that this is completely false? Answer: No, the two theories have a lot in common. Both agree that the universe has grown and cooled over the past 14 billion years, and they agree on how galaxies and stars appeared. In the 1920s, astronomer Edwin Hubble made a revolutionary discovery about the universe. With a newly built telescope at the Mount Wilson Observatory in Los Angeles, Hubble observed that the universe was not static, but that it was expanding. Decades later, in 1998, the prolific Space Telescope, named after the famous astronomer, studied the Hubble Space Telescope, very distant supernovae and discovered that the universe was expanding more slowly than it was today long ago. This discovery was surprising because it has long been assumed that the gravity of matter in the universe would slow its expansion, or even lead it to contract. [All story] Dark energy is thought to be the strange force that separates the cosmos at higher and higher speeds, but it remains unnoticed and mysterious. The existence of this elusive energy, which is thought to make up 73 percent of the universe, is one of the most discussed topics in cosmology.
The theory requires that the relation v = H D {displaystyle v=HD} lasts at all times, where D {displaystyle D} is the comoving distance, v is the recession speed, and v {displaystyle v} , H {displaystyle H} and D {displaystyle D} vary as the universe expands (which is why we write H 0 {displaystyle H_{0} to denote the current Hubble „constant“). For distances much smaller than the size of the observable universe, we can imagine the Hubble-Red displacement as the Doppler displacement which corresponds to the recession speed v {displaystyle v}. However, the displacement of red is not a true Doppler shift, but the result of the expansion of the universe between the moment the light was emitted and the moment it was detected. [79] Alternatively, if the density in the universe were equal to or less than the critical density, the expansion would slow down, but would never stop. In this scenario known as the „Big Freeze,“ the universe would continue until star formation stopped consuming all the interstellar gas in each galaxy. In the meantime, all existing stars would burn and become white dwarfs, neutron stars, and black holes. Perhaps the most difficult alternative to the Big Bang and inflation is Roger Penrose`s theory of „Conformal Cyclic Cosmology“ (CCC). Like the Big Bounce, it is a universe that could have existed forever. But in the CCC, he never goes through a period of contraction – it just goes wrong. A few minutes after the expansion also began the period known as the Big Bang nucleosynthesis.
Thanks to temperatures that dropped to 1 billion kelvins and energy densities fell roughly the equivalent of air, neutrons and protons began to connect to the first deuteriums (a stable isotope of hydrogen) and helium atoms in the universe. However, most of the protons in the universe were not combined as hydrogen nuclei. In early 2003, the first results of the Wilkinson Microwave Anisotropy sample were published, providing the most accurate values at the time for some of the cosmological parameters. The results refuted several specific cosmic inflation patterns, but correspond to the theory of inflation in general. [71] The planck probe was launched in May 2009. Other cosmic experiments of microwave origin based on the ground and the balloon are underway. In describing the origin of the universe, the Big Bang has a significant influence on religion and philosophy. [141] [142] It has thus become one of the most vivid areas of the discourse between science and religion. [143] Some believe that the Big Bang involves a Creator,[144][145] and some see its mention in their sacred books,[146] while others argue that the cosmology of the Big Bang makes the idea of a creator superfluous. [142] [147] The Big Bang theory was developed from observations of the structure of the universe and theoretical considerations.
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