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22 billion years in the future is the earliest possible end of the Universe in the Big Rip scenario, assuming a model of dark energy with w = −1.5. [21] [22] False vacuum decay may occur in 20 to 30 billion years if the Higgs field is metastable. [23] [24] [25]
General relativity can be employed to describe the universe on the largest possible scale. There are several possible solutions to the equations of general relativity, and each solution implies a possible ultimate fate of the universe. Alexander Friedmann proposed several solutions in 1922, as did Georges Lemaître in 1927. [4]
Speculatively, it is possible that the universe may enter a second inflationary epoch, or assuming that the current vacuum state is a false vacuum, the vacuum may decay into a lower-energy state. [15]:§VE It is also possible that entropy production will cease and the universe will reach heat death. [15]:§VID
However, it may still be possible to determine the expansion of the universe through the study of hypervelocity stars. [131] 1.05×10 12 (1.05 trillion) The estimated time by which the universe will have expanded by a factor of more than 10 26, reducing the average particle density to less than one particle per cosmological horizon volume ...
Heat death of the universe – Possible fate of the universe List of other end scenarios than Heat Death – Theories about the end of the universe Tiny Graphical timeline from Big Bang to Heat Death – Aspect of physical cosmology - Timeline uses the log scale for comparison with the double-logarithmic scale in this article.
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.
The 1st-century bishop of Edessa predicted this date to be the birth date of the Antichrist and the end of the universe. [148] 23 Oct 1997 James Ussher: This 17th-century Irish archbishop predicted this date to be 6,000 years since creation and therefore the end of the world. [149] 31 Mar 1998 Hon-Ming Chen
Timelapse of the Future: A Journey to the End of Time is a 2019 short epic documentary film created by American astronomy-themed musician and filmmaker John D. Boswell, made as a follow-up to his other short film Timelapse of the Entire Universe. [1]