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In physical cosmology, the Big Rip is a hypothetical cosmological model concerning the ultimate fate of the universe, in which the matter of the universe, from stars and galaxies to atoms and subatomic particles, and even spacetime itself, is progressively torn apart by the expansion of the universe at a certain time in the future, until distances between particles will infinitely increase.
The end of the Universe in the Big Rip scenario, assuming a model of dark energy with w = −1.5. Observations of galaxy cluster speeds by the Chandra X-ray Observatory suggest that the true value of w is ~-0.991, meaning the Big Rip will not occur. [218] 10¹⁰⁰: Various
The universe could then consist of an infinite sequence of finite universes, with each finite universe ending with a Big Crunch that is also the Big Bang of the next universe. A problem with the cyclic universe is that it does not reconcile with the second law of thermodynamics , as entropy would build up from oscillation to oscillation and ...
The end of the world or end times [2] is predicted by several world religions (both Abrahamic and non-Abrahamic), which teach that negative world events will reach a climax. Belief that the end of the world is imminent is known as apocalypticism , and over time has been held both by members of mainstream religions and by doomsday cults .
The Big Crunch is a hypothetical scenario for the ultimate fate of the universe, in which the expansion of the universe eventually reverses and the universe recollapses, ultimately causing the cosmic scale factor to reach absolute zero, an event potentially followed by a reformation of the universe starting with another Big Bang.
This theory could explain the mysterious disappearance of information about matter and energy inside a black hole, but it the concept has its flaws.
Conformal cyclic cosmology (CCC) is a cosmological model in the framework of general relativity and proposed by theoretical physicist Roger Penrose. [1] [2] [3] In CCC, the universe iterates through infinite cycles, with the future timelike infinity (i.e. the latest end of any possible timescale evaluated for any point in space) of each previous iteration being identified with the Big Bang ...
In the past two decades three other areas of concern have been added: climate change, artificial Intelligence and mis- and disinformation. Each year, the members of the Science and Security Board ...