Changes

The ultimate fate of the universe is a valid question because according to all models on the universe, the universe is finite, and will end.<ref name="religious">''When he opened the sixth seal, I looked, and behold, there was a great earthquake, and the sun became black as sackcloth, the full moon became like blood, and the stars of the sky fell to the earth as the fig tree sheds its winter fruit when shaken by a gale. The sky vanished like a scroll that is being rolled up, and every mountain and island was removed from its place. (Revelation 6:12–14)''</ref><ref name="bigbang>^ a b Lemaître, Georges (1927). "Un univers homogène de masse constante et de rayon croissant rendant compte de la vitesse radiale des nébuleuses extra-galactiques". Annales de la Société Scientifique de Bruxelles A47: 49–56. Bibcode 1927ASSB...47...49L translated by A. S. Eddington: Lemaître, Georges (1931). "Expansion of the universe, A homogeneous universe of constant mass and increasing radius accounting for the radial velocity of extra-galactic nebulæ". Monthly Notices of the Royal Astronomical Society 91: 483–490. Bibcode 1931MNRAS..91..483L</ref><ref name="static">Thomson, William. (1851). "On the Dynamical Theory of Heat, with numerical results deduced from Mr Joule’s equivalent of a Thermal Unit, and M. Regnault’s Observations on Steam." Excerpts. [§§1–14 & §§99–100], Transactions of the Royal Society of Edinburgh, March, 1851; and Philosophical Magazine IV. 1852, [from Mathematical and Physical Papers, vol. i, art. XLVIII, pp. 174]</ref> The only question logically, is what will happen at the end of the universe.  There are many different scientific scenarios, and religious scenarios as well. When the Big Bang theory became the foremost explanation for the current state of the universe, the fate of the universe became a valid question.

The ultimate fate of the universe is a valid question because according to all models on the universe, the universe is finite, and will end.<ref name="religious">''When he opened the sixth seal, I looked, and behold, there was a great earthquake, and the sun became black as sackcloth, the full moon became like blood, and the stars of the sky fell to the earth as the fig tree sheds its winter fruit when shaken by a gale. The sky vanished like a scroll that is being rolled up, and every mountain and island was removed from its place. (Revelation 6:12–14)''</ref><ref name="bigbang>^ a b Lemaître, Georges (1927). "Un univers homogène de masse constante et de rayon croissant rendant compte de la vitesse radiale des nébuleuses extra-galactiques". Annales de la Société Scientifique de Bruxelles A47: 49–56. Bibcode 1927ASSB...47...49L translated by A. S. Eddington: Lemaître, Georges (1931). "Expansion of the universe, A homogeneous universe of constant mass and increasing radius accounting for the radial velocity of extra-galactic nebulæ". Monthly Notices of the Royal Astronomical Society 91: 483–490. Bibcode 1931MNRAS..91..483L</ref><ref name="static">Thomson, William. (1851). "On the Dynamical Theory of Heat, with numerical results deduced from Mr Joule’s equivalent of a Thermal Unit, and M. Regnault’s Observations on Steam." Excerpts. [§§1–14 & §§99–100], Transactions of the Royal Society of Edinburgh, March, 1851; and Philosophical Magazine IV. 1852, [from Mathematical and Physical Papers, vol. i, art. XLVIII, pp. 174]</ref> The only question logically, is what will happen at the end of the universe.  There are many different scientific scenarios, and religious scenarios as well. When the Big Bang theory became the foremost explanation for the current state of the universe, the fate of the universe became a valid question.

==Backgroud==

==Background==

The universe is currently expanding at a rate of 73.8 ± 2.4/Megaparsecs per second. (''A megaparsec is 3.08x10¹⁹ kilometers'') Under the big bang model, expansion is currently accelerating.<ref>M. Stone (1976). "Lifetime and decay of excited vacuum states". Phys. Rev. D 14 (12): 3568–3573. Bibcode 1976PhRvD..14.3568S. doi:10.1103/PhysRevD.14.3568.</ref> When [[catholic]] priest George LeMaitre proposed that the universe was born from a singularity, which was expounded on by Edwin Hubble, using the theory of relativity, it became clear that all theories implied an ultimate fate to the universe.

The universe is currently expanding at a rate of 73.8 ± 2.4 kilometers per second per Megaparsecs. (''A megaparsec is 3.08x10¹⁹ kilometers'') Under the big bang model, expansion is currently accelerating.<ref>M. Stone (1976). "Lifetime and decay of excited vacuum states". Phys. Rev. D 14 (12): 3568–3573. Bibcode 1976PhRvD..14.3568S. doi:10.1103/PhysRevD.14.3568.</ref> When [[catholic]] priest George Lemaitre proposed that the universe was born from a singularity, which was expounded on by Edwin Hubble, using the theory of relativity, it became clear that all theories implied an ultimate fate to the universe.

 

==Scientific theories==

==Scientific theories==

There are three commonly accepted theories on how the universe will end. They are the Big crunch, where the universe collapses on itself, the Big Rip scenario, where acceleration destroys the bonding of atoms, and all matter decays, and the Heat death, where the universe reaches a maximum state of entropy.

There are three commonly accepted theories on how the universe will end. They are the Big crunch, where the universe collapses on itself, the Big Rip scenario, where acceleration destroys the bonding of atoms, and all matter decays, and the Heat death, where the universe reaches a maximum state of entropy.