December 22, 2016

Big Crunch

One of the most essential and proportional hypotheses of the ultimate fate of several other universes is the Big Crunch. The Big Crunch involves metric expansion of space eventually reverses and the universe re-collapses, ultimately ending as a black hole singularity or causing a reformation of the universe starting with another big bang, which has been agreed by many cosmologists as well as astrophysicists. The ultimate fate of the world is often treated as a subject with a relevant conflict of interest. This term involves equal numbers to agree and disagree upon. First up, we know the Big Bang theory is a cosmological model for the universe that accounts for the fact, the universe expanded from a very high density and high-temperature state and offers a comprehensive explanation for a broad range of phenomena, including the abundance of light elements, the cosmic microwave background, large scale structure and Hubble's Law (1. Objects observed in deep space are found to have a Doppler shift (change in frequency or wavelength relative to its source) interpretable as relative velocity away from Earth, 2. This Doppler shift measured the speed of galaxies receding is approximately proportional to their distance from the Earth for galaxies up to a few hundred megaparsecs away.). The universe then diminishes, where the matter is reasonably consistently distributed. As temperature increases exponentially, stars would explode and vaporize, and eventually, atoms and even nuclei would break apart in a reverse performance of the early stages after the Big Bang. The universe then becomes compact with minimum volume with magnified irregularities and over the final steps would collapse, where gravity and the warping of space-time will immensely depend on the direction the singularity (A gravitational singularity or space-time singularity is a location in space-time where the gravitational field of a celestial body becomes infinite in a way that does not depend on the coordinate system.) is approached by an in-falling body. This phenomenon is often chaotic and violent, where all current concepts of time, distance, and direction will become meaningless.
On a fantastic note, recent analyses from the WMAP satellite and the Cosmic Background Imager seem to be confirming other recent observations indicating that the universe is, in fact, flat (as opposed to closed or open). These experiments have revealed hot and cold spots with a size range of approximately one degree across, which, according to current theory, would be indicative of a flat universe. Part of the above analysis includes different dimensions of the universe (namely, flat, closed, and open). Thus, revealing this hypothesis over its possibility of being true to the universe depending on each of their physical properties. The density of the universe, how much dark energy it contains, and the so-called “equation of state” (density of dark energy in response to the expansion of the universe) also play a vital role in determining its own fate. For, eg, if the geometry is preferred closed, then there are two main possibilities (either gravity expands or contracts until the matter in the universe (Big Crunch), depending on the amount of dark energy the universe possesses.). Bringing our understanding to an end, Big Crunch still remains a possible fate to our universe yet over another hundred billion years, and that what goes around comes around to nothing but its own start leading to again another Big Bang.

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