The Big Bang theory was first proposed by Belgian priest and cosmologist Georges Lemaitre in the 1920s. Since then, a wealth of observational evidence has confirmed that the universe did indeed begin in a hot, dense state. The cosmic microwave background radiation, discovered in the 1960s, is thought to be the residual heat from the early universe.
Dark matter is another mysterious component of the universe. It is thought to make up approximately 27% of the universe’s mass-energy density, but it has yet to be directly observed. Dark matter is necessary to explain the observed rotation curves of galaxies and the large-scale structure of the universe. cosmos a spacetime odyssey
In the distant future, the universe will undergo a transformation, as the expansion of the universe causes the density of matter and energy to decrease. This will lead to a universe that is cold, dark, and empty, a far cry from the vibrant and dynamic universe we see today. The Big Bang theory was first proposed by