Apocalypticism

Apocalypticism is the religious belief that there will be an apocalypse, a term which originally referred to a revelation, but now usually refers to the belief that the end of the world is imminent, even within one’s own lifetime. This belief is usually accompanied by the idea that civilization will soon come to a tumultuous end due to some sort of catastrophic global event. These views and movements often focus on cryptic revelations about a sudden, dramatic, and cataclysmic intervention of God in history; the judgment of all men; the salvation of the faithful elect; and the eventual rule of the elect with God in a renewed heaven and earth. Arising initially in Zoroastrianism apocalypticism was developed more fully in Judaic, Christian, and Islamic eschatological speculation.

Apocalypticism is often conjoined with the belief that esoteric knowledge that will likely be revealed in a major confrontation between good and evil forces, destined to change the course of history. Apocalypses can be viewed as good, evil, ambiguous or neutral, depending on the particular religion or belief system promoting them. However, it is not exclusively a religious idea and there are end times or transitional scenarios based in modern science and technology.

apocalypse

Religions

Buddhism

See also: Maitreya and Buddhist eschatology

Buddha described his teachings as disappearing five thousand years from when he died, corresponding approximately to the year 4600 CE. He also said that at this time knowledge of dharma will also be lost. The last of his relics will be gathered in Bodh Gaya and cremated. There will be a new era in which the next Buddha Maitreya will appear, but it will be preceded by the degeneration of human society. This will be a period of greed, lust, poverty, ill will, violence, murder, impiety, physical weakness, sexual depravity and societal collapse, and even the Buddha himself will be forgotten. This will be followed by a new golden age.

Christianity

Christadelphians

Main article: Christadelphians

For Christadelphians, Armageddon marks the “great climax of history when the nations would be gathered together ‘into a place called in the Hebrew tongue Armageddon’, and the judgment on them would herald the setting up of the Kingdom of God.” After this Christadelphians believe that Jesus will return to the earth in person to set up the Kingdom of God in fulfilment of the promises made to Abraham and David. This includes the belief that the coming Kingdom will be the restoration of God’s first Kingdom of Israel, which was under David and Solomon. For Christadelphians, this is the focal point of the gospel taught by Jesus and the apostles.

Jesus

Main article: Jesus Christ

The gospels portray Jesus as an apocalyptic prophet, described by himself and by others as the Son of Man and hailing the restoration of Israel Jesus himself, as the Son of God (a designation used both by himself and by others) was to rule this kingdom as lord of the Twelve Apostles, the judges of the twelve tribes.

Albert Schweitzer emphasized that Jesus was an apocalyptic prophet, preparing his fellow Jews for the imminent end of the world. Many historians concur that Jesus was an apocalyptic prophet, most notably Paula Fredriksen, Bart Ehrman, and John P. Meier. E. P. Sanders portrays Jesus as expecting to assume the “viceroy” position in God’s kingdom, above the Apostles, who would judge the twelve tribes, but below God. He concludes, however, that Jesus seems to have rejected the title Messiah, and he contends that the evidence is uncertain as to whether Jesus meant himself when he referred to the Son of Man coming on the clouds as a divine judge (see also Daniel’s Vision of Chapter 7), and further states that biblical references to the Son of Man as a suffering figure are not genuine.

The preaching of John was, “Repent, for the kingdom of heaven is at hand” (Matthew 3:2), and Jesus also taught this same message (Matthew 4:17; Mark 1:15). Additionally, Jesus spoke of the signs of “the close of the age” in the Olivet Discourse in Matthew 24 (and parallels), near the end of which he said, “[T]his generation will not pass away until all these things take place” (v. 34). Interpreters have understood this phrase in a variety of ways, some saying that most of what he described was in fact fulfilled in the destruction of the Temple in the Roman Siege of Jerusalem, and some that “generation” should be understood instead to mean “race” among other explanations. Other scholars such as Ehrman and Sanders accept that Jesus was simply mistaken, that he believed the end of the world to be imminent. “We make sense of these pieces of evidence if we think that Jesus himself told his followers that the Son of Man would come while they still lived. The fact that this expectation was difficult for Christians in the first century helps prove that Jesus held it himself. We also note that Christianity survived this early discovery that Jesus had made a mistake very well.”

Year 1000

There are a few recorded instances of apocalypticism leading up to the year 1000. However they mostly rely on one source, Rodulfus Glaber.

Specifically in Western Europe, during the year 1000, Christian philosophers held many debates on when Jesus was actually born and the debates continue to today. This caused confusion between the common people on whether or not the apocalypse would occur at a certain time. Because both literate and illiterate people commonly accepted this idea of the apocalypse, they could only accept what they heard from religious leaders on when the disastrous event would occur. Religious leader, Abbo II of Metz believed that Jesus was born 21 years after year 1 which was commonly accepted by close circles of his followers. Abbot Heriger of Lobbes, argued that the birth of Jesus occurred not during the year 1 but rather during the 42nd year of the common era. Eventually many scholars came to accept that the apocalypse would occur sometime between 979-1042.

Although there were debates about the apocalypse itself, few people actually understood the consequences of what would happen if the apocalypse occurred. Unfortunately, few documents from around the year 1000 exist to actually interpret what people thought would happen, and because of this, many scholars are unaware of what people actually felt. People do understand that the idea of apocalypticism has influenced several Western Christian European leaders into social reform.

Under the influence of the Sibylline Oracles and figures such as Otto III and Abbot Adso of Montier-en-Der many felt that the apocalypse would soon occur.

Some historians, such as Richard Landes, express doubt that there was any kind of apocalyptic consideration approaching the year 1000.

Fifth Monarchy Men

Main article: Fifth Monarchists

The Fifth Monarchists or Fifth Monarchy Men were an extreme Puritan sect active from 1649 to 1660 during the Interregnum, following the English Civil Wars of the 17th century. They took their name from a prophecy in the Book of Daniel that four ancient monarchies (Babylonian, Persian, Macedonian, and Roman) would precede the kingdom of Christ. They also referred to the year 1666 and its relationship to the biblical Number of the Beast indicating the end of earthly rule by carnal human beings. They were one of a number of nonconformist dissenting groups that emerged around this time.

Isaac Newton and the end of the world in 2060

Main article: Isaac Newton’s occult studies

In late February and early March 2003, a large amount of media attention circulated around the globe regarding largely unknown and unpublished documents, evidently written by Isaac Newton, indicating that he believed the world would end no earlier than 2060. The story garnered vast amounts of public interest and found its way onto the front page of several widely distributed newspapers, including the UK’s Daily Telegraph, Canada’s National Post, Israel’s Maariv and Yediot Aharonot, and was also featured in an article in the scientific journal Canadian Journal of History.

The two documents detailing this prediction are currently housed within the Jewish National and University Library in Jerusalem. Both were believed to be written toward the end of Newton’s life, circa 1705, a time frame most notably established by the use of the full title of Sir Isaac Newton within portions of the documents.

These documents do not appear to have been written with the intention of publication and Newton expressed a strong personal dislike for individuals who provided specific dates for the Apocalypse purely for sensational value. Furthermore, he at no time provides a specific date for the end of the world in either of these documents. See Isaac Newton’s religious views for more details.

The first document, part of the Yahuda collection, is a small letter slip, on the back of which is written haphazardly in Newton’s hand:

Prop. 1. The 2300 prophetick days did not commence before the rise of the little horn of the He Goat.

2 Those day [sic] did not commence a[f]ter the destruction of Jerusalem & ye Temple by the Romans A.[D.] 70.

3 The time times & half a time did not commence before the year 800 in wch the Popes supremacy commenced

4 They did not commence after the re[ig]ne of Gregory the 7th. 1084

5 The 1290 days did not commence b[e]fore the year 842.

6 They did not commence after the reigne of Pope Greg. 7th. 1084

7 The diffence [sic] between the 1290 & 1335 days are a parts of the seven weeks.

Therefore the 2300 years do not end before ye year 2132 nor after 2370. The time times & half time do n[o]t end before 2060 nor after [2344] The 1290 days do not begin [this should read: end] before 2090 nor after 1374 [sic; Newton probably means 2374]

The second reference to the 2060 prediction can be found in a folio, in which Newton writes:

So then the time times & half a time are 42 months or 1260 days or three years & an half, reckoning twelve months to a yeare & 30 days to a month as was done in the Calendar of the primitive year. And the days of short lived Beasts being put for the years of lived [sic for “long lived”] kingdoms, the period of 1260 days, if dated from the complete conquest of the three kings A.C. 800, will end A.C. 2060. It may end later, but I see no reason for its ending sooner. This I mention not to assert when the time of the end shall be, but to put a stop to the rash conjectures of fancifull men who are frequently predicting the time of the end, & by doing so bring the sacred prophesies into discredit as often as their predictions fail. Christ comes as a thief in the night, & it is not for us to know the times & seasons wch God hath put into his own breast.

Newton may not have been referring to the post 2060 event as a destructive act resulting in the annihilation of the globe and its inhabitants, but rather one in which he believed the world, as he saw it, was to be replaced with a new one based upon a transition to an era of divinely inspired peace. In Christian and Islamic theology this concept is often referred to as The Second Coming of Jesus Christ and the establishment of The Kingdom of God on Earth. In a separate manuscript, Isaac Newton paraphrases Revelation 21 and 22 and relates the post 2060 events by writing:

A new heaven & new earth. New Jerusalem comes down from heaven prepared as a Bride adorned for her husband. The marriage supper. God dwells with men wipes away all tears from their eyes, gives them of ye fountain of living water & creates all thin things new saying, It is done. The glory & felicity of the New Jerusalem is represented by a building of Gold & Gemms enlightened by the glory of God & ye Lamb & watered by ye river of Paradise on ye banks of which grows the tree of life. Into this city the kings of the earth do bring their glory & that of the nations & the saints reign for ever & ever.

Millerites and The Great Disappointment

Main articles: Great Disappointment and Millerites

Preacher William Miller, who led his followers to the Great Disappointment of 1844.

The Great Disappointment in the Millerite movement was the reaction that followed Baptist preacher William Miller’s proclamations that Jesus Christ would return to the Earth by 1844, what he called the Advent. His study of the Daniel 8 prophecy during the Second Great Awakening led him to the conclusion that Daniel’s “cleansing of the sanctuary” was cleansing of the world from sin when Christ would come, and he and many others prepared, but October 22, 1844, came and they were disappointed.

These events paved the way for the Adventists who formed the Seventh-day Adventist Church. They contended that what had happened on October 22 was not Jesus’ return, as Miller had thought, but the start of Jesus’ final work of atonement, the cleansing in the heavenly sanctuary, leading up to the Second Coming.

Seventh-day Adventists

Main article: Seventh-day Adventists

The ideological descendants of the Millerites are the Seventh-day Adventists. They are a Protestant Christian denomination which is distinguished by its observance of Saturday, the seventh day of the week in Christian and Jewish calendars, as the Sabbath, and its emphasis on the imminent Second Coming (advent) of Jesus Christ. The denomination grew out of the Millerite movement in the United States during the mid-19th century and it was formally established in 1863. Among its founders was Ellen G. White, whose extensive writings are still held in high regard by the church.

Mormonism

Like many 19th-century American Protestant churches, the Mormon tradition teaches that adherents are living shortly before the Second Coming of Christ. The term “latter days” is used in the official names of several Mormon churches, including The Church of Jesus Christ of Latter-day Saints. LDS president Wilford Woodruff preached multiple times that many then-living adherents “would not taste death” before witnessing the return of Christ. According to LDS Church teachings, the true gospel will be taught in all parts of the world prior to the Second Coming. Church members believe that there will be increasingly severe wars, earthquakes, hurricanes, and other man-made and natural disasters prior to the Second Coming.

Jehovah’s Witnesses

The eschatology of Jehovah’s Witnesses is central to their religious beliefs. They believe that Jesus Christ has been ruling in heaven as king since 1914 (a date they believe was prophesied in Scripture), and that after that time a period of cleansing occurred, resulting in God’s selection of the Bible Students associated with Charles Taze Russell to be his people in 1919. They also believe the destruction of those who reject their message and thus willfully refuse to obey God will shortly take place at Armageddon, ensuring that the beginning of the new earthly society will be composed of willing subjects of that kingdom.

The group’s doctrines surrounding 1914 are the legacy of a series of emphatic claims regarding the years 1799, 1874, 1878, 1914, 1918 and 1925 made in the Watch Tower Society’s publications between 1879 and 1924. Claims about the significance of those years, including the presence of Jesus Christ, the beginning of the “last days”, the destruction of worldly governments and the earthly resurrection of Jewish patriarchs, were successively abandoned. In 1922 the society’s principal journal, Watch Tower, described its chronology as “no stronger than its weakest link”, but also claimed the chronological relationships to be “of divine origin and divinely corroborated…in a class by itself, absolutely and unqualifiedly correct” and “indisputable facts”, while repudiation of Russell’s teachings was described as “equivalent to a repudiation of the Lord”.

The Watch Tower Society has stated that its early leaders promoted “incomplete, even inaccurate concepts”. The Governing Body of Jehovah’s Witnesses says that, unlike Old Testament prophets, its interpretations of the Bible are not inspired or infallible. Witness publications say that Bible prophecies can be fully understood only after their fulfillment, citing examples of biblical figures who did not understand the meaning of prophecies they received. Watch Tower publications often cite Proverbs 4:18, “The path of the righteous ones is like the bright light that is getting lighter and lighter until the day is firmly established” (NWT) to support their view that there would be an increase in knowledge during “the time of the end”, as mentioned in Daniel 12:4. Jehovah’s Witnesses state that this increase in knowledge needs adjustments. Watch Tower publications also say that unfulfilled expectations are partly due to eagerness for God’s Kingdom and that they do not call their core beliefs into question.

Realized eschatology

Realized eschatology is a Christian eschatological theory popularized by J.A.T. Robinson, Joachim Jeremias, Ethelbert Stauffer (1902- 1979), and C. H. Dodd (1884–1973) that holds that the eschatological passages in the New Testament do not refer to the future, but instead refer to the ministry of Jesus and his lasting legacy. Eschatology is therefore not the end of the world but its rebirth instituted by Jesus and continued by his disciples, a historical (rather than transhistorical) phenomenon. Those holding this view generally dismiss end times theories, believing them to be irrelevant; they hold that what Jesus said and did, and told his disciples to do likewise, are of greater significance than any messianic expectations.

Islam

Jainism

Judaism

According to some ancient Hebrew worldviews, reality unfolds along a linear path (or rather, a spiral path, with cyclical components that nonetheless have a linear trajectory); the world began with God and is ultimately headed toward God’s final goal for creation, the world to come. The main textual source for the belief in the end of days and accompanying events is the Tanakh or Hebrew Bible. The roots of Jewish eschatology are to be found in the pre-exile Prophets, including Isaiah and Jeremiah, and the exile-prophets Ezekiel and Deutero-Isaiah. The main tenets of Jewish eschatology are the following, in no particular order, elaborated in the Books of Isaiah, Jeremiah and Ezekiel:

End of world (before everything as follows).
God redeems the Jewish people from the captivity that began during the Babylonian Exile, in a new Exodus
God returns the Jewish people to the Land of Israel
God restores the House of David and the Temple in Jerusalem
God creates a regent from the House of David (i.e. the Jewish Messiah) to lead the Jewish people and the world and usher in an age of justice and peace
All nations recognize that the God of Israel is the only true God
God resurrects the dead
God creates a new heaven and a new earth

It is also believed that history will complete itself and the ultimate destination will be reached when all mankind returns to the Garden of Eden.

Moses of Crete, a rabbi in the 5th century, claimed to be the messiah and promised to lead the people, like the ancient Moses, through a parted sea back to Palestine. His followers left their possessions and waited for the promised day, when, at his command, many cast themselves into the sea, some finding death, others being rescued by sailors.

Hindu

Norse

Cyclic time and Hoddmímis holt

Rudolf Simek theorizes that the survival of Líf and Lífþrasir at the end of Ragnarök is “a case of reduplication of the anthropogeny, understandable from the cyclic nature of the Eddic eschatology”. Simek says that Hoddmímis holt “should not be understood literally as a wood or even a forest in which the two keep themselves hidden, but rather as an alternative name for the world-tree Yggdrasill. Thus, the creation of mankind from tree trunks (Askr, Embla) is repeated after the Ragnarök as well”. Simek says that in Germanic regions, the concept of mankind originating from trees is ancient, and additionally points out legendary parallels in a Bavarian legend of a shepherd who lives inside a tree, whose descendants repopulate the land after life there has been wiped out by plague (citing a retelling by F. R. Schröder). In addition, Simek points to an Old Norse parallel in the figure of Örvar-Oddr, “who is rejuvenated after living as a tree-man (Ǫrvar-Odds saga 24–27)”.

Muspille, Heliand, and Christianity

Theories have been proposed about the relation between Ragnarök and the 9th century Old High German epic poem Muspilli about the Christian Last Judgment, where the word Muspille appears, and the 9th century Old Saxon epic poem Heliand about the life of Christ, where various other forms of the word appear. In both sources, the word is used to signify the end of the world through fire. Old Norse forms of the term also appear throughout accounts of Ragnarök, where the world is also consumed in flames, and, though various theories exist about the meaning and origins of the term, its etymology has not been solved.

Proto-Indo-European basis

Parallels have been pointed out between the Ragnarök of Norse religion and the beliefs of other related Indo-European peoples. Subsequently, theories have been put forth that Ragnarök represents a later evolution of a Proto-Indo-European belief along with other cultures descending from the Proto-Indo-Europeans. These parallels include comparisons of a cosmic winter motif between the Norse Fimbulwinter, the Iranian Bundahishn and Yima. Víðarr’s stride has been compared to the Vedic god Vishnu in that both have a “cosmic stride” with a special shoe used to tear apart a beastly wolf. Larger patterns have also been drawn between “final battle” events in Indo-European cultures, including the occurrence of a blind or semi-blind figure in “final battle” themes, and figures appearing suddenly with surprising skills.

Volcanic eruptions

Hilda Ellis Davidson theorizes that the events in Völuspá occurring after the death of the gods (the sun turning black, steam rising, flames touching the heavens, etc.) may be inspired by the volcanic eruptions on Iceland. Records of eruptions on Iceland bear strong similarities to the sequence of events described in Völuspá, especially the eruption at Laki that occurred in 1783. Bertha Phillpotts theorizes that the figure of Surtr was inspired by Icelandic eruptions, and that he was a volcano demon. Surtr’s name occurs in some Icelandic place names, among them the lava tube Surtshellir, a number of dark caverns in the volcanic central region of Iceland.

Bergbúa þáttr

Parallels have been pointed out between a poem spoken by a jötunn found in the 13th century þáttr Bergbúa þáttr (“the tale of the mountain dweller”). In the tale, Thórd and his servant get lost while traveling to church in winter, and so take shelter for the night within a cave. Inside the cave they hear noises, witness a pair of immense burning eyes, and then the being with burning eyes recites a poem of 12 stanzas. The poem the being recites contains references to Norse mythology (including a mention of Thor) and also prophecies (including that “mountains will tumble, the earth will move, men will be scoured by hot water and burned by fire”). Surtr’s fire receives a mention in stanza 10. John Lindow says that the poem may describe “a mix of the destruction of the race of giants and of humans, as in Ragnarök” but that “many of the predictions of disruption on earth could also fit the volcanic activity that is so common in Iceland.”

Modern influences

In late 2013 and early 2014, English-language media outlets widely reported that Ragnarök was foretold to occur on 22 February 2014. Apparently patterned after the 2012 phenomenon, the claim was at times attributed to a “Viking Calendar”. No such calendar is known to have existed, and the source was a “prediction” made to media outlets by the Jorvik Viking Centre in York, England, intended to draw attention to an event that the institution was to hold on that date. The Jorvik Viking Centre was criticized for misleading the public to promote the event. In a 2014 article on the claims, philologist Joseph S. Hopkins perceives the media response as an example of a broad revival of interest in the Viking Age and ancient Germanic topics.

Zoroastrian

Contemporary religious

Branch Davidians

The Branch Davidians (also known as The Branch) are a religious group that originated in 1955 from a schism among the Shepherd’s Rod/Davidians. The Branch group was initially led by Benjamin Roden. Branch Davidians are most associated with the Waco siege of 1993, which involved David Koresh. There is documented evidence (FBI negotiation transcripts between Kathryn Shroeder and Steve Schneider with interjections from Koresh himself) that David Koresh and his followers did not call themselves Branch Davidians. In addition, David Koresh, through forgery, stole the identity of the Branch Davidian Seventh-day Adventists for the purpose of obtaining the Mount Carmel Center property. The doctrinal beliefs of the Branch Davidians differ on teachings such as the Holy Spirit and his nature, and the feast days and their requirements. Both groups have disputed the relevance of the other’s spiritual authority based on the proceedings following Victor Houteff’s death. From its inception in 1930, the Davidians/Shepherd’s Rod group believed themselves to be living in a time when Biblical prophecies of a final divine judgment were coming to pass as a prelude to Christ’s Second Coming.

In the late 1980s, Koresh and his followers abandoned many Branch Davidian teachings. Koresh became the group’s self-proclaimed final prophet. “Koreshians” were the majority resulting from the schism among the Branch Davidians, but some of the Branch Davidians did not join Koresh’s group and instead gathered around George Roden or became independent. Following a series of violent shootouts between Roden’s and Koresh’s group, the Mount Carmel compound was eventually taken over by the “Koreshians”. In 1993, the ATF and Texas Army National Guard raided one of the properties belonging to a new religious movement centered around David Koresh that evolved from the Branch Davidians for suspected weapons violations. It is unknown who shot first, but the ATF surrounded and tried to invade the home of the Branch Davidians. This raid resulted in a two-hour firefight in which four ATF agents were killed; this was followed by a standoff with government agents that lasted for 51 days. The siege ended in a fire that engulfed the Mount Carmel compound which led to the deaths of 76 Branch Davidians inside.

Harold Camping

UFO religions

Main article: UFO religion

Alien Guy

UFO religions sometimes feature an anticipated end-time in which extraterrestrial beings will bring about a radical change on Earth or lift the religious believers to a higher plane of existence. One such religious group’s failed expectations of such an event served as the basis for the classic social psychology study When Prophecy Fails. Some adherents believe that the arrival or rediscovery of alien civilizations, technologies and spirituality will enable humans to overcome current ecological, spiritual and social problems. Issues such as hatred, war, bigotry, poverty and so on are said to be resolvable through the use of superior alien technology and spiritual abilities. Such belief systems are also described as millenarian in their outlook.

Mayan calendar 2012

David Meade

Main article: David Meade (author)
See also: Revelation 12 sign prophecy

David Meade is the pen name of an American end-times conspiracy theorist and book author who has yet to disclose his real name. Meade, who describes himself as a “Christian numerologist”, claims to have attended the University of Louisville, where he “studied astronomy, among other subjects”, but, because his real name is unknown, The Washington Post reported that the university could not confirm whether he had ever been a student there. He is also a writer, researcher and investigator who has written and self-published at least 13 books. He made appearances and interviews on Coast to Coast AM, The Washington Post, Glenn Beck Program, YouTube with pastor Paul Begley, and the Daily Express. He is best known for making numerous predictions, which have passed, regarding the end times, including that a hidden planet named Nibiru (sometimes known as Planet X) would destroy the Earth.

Meade predicted that planet Nibiru would collide with Earth on September 23, 2017, destroying it. After his prediction failed, he revised the apocalypse to October, where he stated that the seven-year tribulation would possibly start followed by a millennium of peace. In 2018, Meade again made several predictions for that year, for instance, that North Korea becoming a superpower in March 2018 and that Nibiru would destroy the Earth in spring. Meade announced that the apocalypse would begin in March 2018, but he didn’t predict the exact date. After March 2018 passed, he moved the apocalypse to April 23, 2018, in which he also predicted the Sun, Moon, Jupiter, and Virgo will signal the rapture, and that Nibiru would destroy the Earth that day. However, before that date he said that reports that he predicted the end on 23 April were “fake news”, but that the rapture—but not the end of the world—would take place on an unspecified date between May and December 2018.

Contemporary non-religious

Fate of the universe

Main article: Ultimate fate of the universe

The fate of the universe is determined by its density. The preponderance of evidence to date, based on measurements of the rate of expansion and the mass density, favors a universe that will continue to expand indefinitely, resulting in the “Big Freeze” scenario below. However, observations are not conclusive, and alternative models are still possible.

Big Freeze or heat death

Main articles: Future of an expanding universe and Heat death of the universe

The Big Freeze is a scenario under which continued expansion results in a universe that asymptotically approaches absolute zero temperature. This scenario, in combination with the Big Rip scenario, is currently gaining ground as the most important hypothesis. It could, in the absence of dark energy, occur only under a flat or hyperbolic geometry. With a positive cosmological constant, it could also occur in a closed universe. In this scenario, stars are expected to form normally for 10¹² to 10¹⁴ (1–100 trillion) years, but eventually the supply of gas needed for star formation will be exhausted. As existing stars run out of fuel and cease to shine, the universe will slowly and inexorably grow darker. Eventually black holes will dominate the universe, which themselves will disappear over time as they emit Hawking radiation. Over infinite time, there would be a spontaneous entropy decrease by the Poincaré recurrence theorem, thermal fluctuations, and the fluctuation theorem.

A related scenario is heat death, which states that the universe goes to a state of maximum entropy in which everything is evenly distributed and there are no gradients—which are needed to sustain information processing, one form of which is life. The heat death scenario is compatible with any of the three spatial models, but requires that the universe reach an eventual temperature minimum.

Big Crunch

The mass density of the universe could be enough to stop its expansion and begin contracting. The end result is unknown; a simple estimation would have all the matter and space-time in the universe collapse into a dimensionless singularity back into how the universe started with the Big Bang, but at these scales unknown quantum effects need to be considered. Recent evidence suggests that this scenario is not likely but it has not been ruled out as measurements are only available over a short period of time and could reverse in the future.

False vacuum

In order to best understand the false vacuum collapse theory, one must first understand the Higgs field which permeates the universe. Much like an electromagnetic field, it varies in strength based upon its potential. A true vacuum exists so long as the universe exists in its lowest energy state, in which case the false vacuum theory is irrelevant. However, if the vacuum is not in its lowest energy state (a false vacuum), it could tunnel into a lower energy state. This is called vacuum decay. This has the potential to fundamentally alter our universe; in more audacious scenarios even the various physical constants could have different values, severely affecting the foundations of matter, energy, and spacetime. It is also possible that all structures will be destroyed instantaneously, without any forewarning. Studies of a particle similar to the Higgs boson support the theory of a false vacuum collapse billions of years from now.

End of life on earth

Main article: Future of Earth

The biological and geological future of Earth is an extrapolation based on the estimated effects of long-term influences. These include the chemistry at Earth’s surface, the rate of cooling of the planet’s interior, the gravitational interactions with other objects in the Solar System, and a steady increase in the Sun’s luminosity. An uncertain factor in this extrapolation is the ongoing influence of technology introduced by humans, such as climate engineering, which could cause significant changes to the planet.

Over time intervals of hundreds of millions of years, random celestial events pose a global risk to the biosphere, which can result in mass extinctions. These include impacts by comets or asteroids, and the possibility of a massive stellar explosion, called a supernova, within a 100-light-year radius of the Sun. Other large-scale geological events are more predictable. Milankovitch theory predicts that the planet will continue to undergo glacial periods at least until the Quaternary glaciation comes to an end. These periods are caused by variations in eccentricity, axial tilt, and precession of the Earth’s orbit. As part of the ongoing supercontinent cycle, plate tectonics will probably result in a supercontinent in 250–350 million years. Sometime in the next 1.5–4.5 billion years, the axial tilt of the Earth may begin to undergo chaotic variations, with changes in the axial tilt of up to 90°.

The luminosity of the Sun will steadily increase, resulting in a rise in the solar radiation reaching the Earth. This will result in a higher rate of weathering of silicate minerals, which will cause a decrease in the level of carbon dioxide in the atmosphere. In about 600 million years from now, the level of carbon dioxide will fall below the level needed to sustain C₃ carbon fixation photosynthesis used by trees. Some plants use the C₄ carbon fixation method, allowing them to persist at carbon dioxide concentrations as low as 10 parts per million. However, the long-term trend is for plant life to die off altogether. The extinction of plants will be the demise of almost all animal life, since plants are the base of the food chain on Earth.

In about one billion years, the solar luminosity will be 10% higher than at present. This will cause the atmosphere to become a “moist greenhouse”, resulting in a runaway evaporation of the oceans. As a likely consequence, plate tectonics will come to an end, and with them the entire carbon cycle. Following this event, in about 2–3 billion years, the planet’s magnetic dynamo may cease, causing the magnetosphere to decay and leading to an accelerated loss of volatiles from the outer atmosphere. Four billion years from now, the increase in the Earth’s surface temperature will cause a runaway greenhouse effect, heating the surface enough to melt it. By that point, all life on the Earth will be extinct., The most probable fate of the planet is absorption by the Sun in about 7.5 billion years, after the star has entered the red giant phase and expanded beyond the planet’s current orbit.

Technological singularity

Main article: Technological singularity

The technological singularity (also, simply, the singularity) is a hypothetical future point in time at which technological growth becomes uncontrollable and irreversible, resulting in unfathomable changes to human civilization.

According to the most popular version of the singularity hypothesis, called intelligence explosion, an upgradable intelligent agent (such as a computer running software-based artificial general intelligence) would enter a “runaway reaction” of self-improvement cycles, with each new and more intelligent generation appearing more and more rapidly, causing an intelligence explosion and resulting in a powerful superintelligence that would, qualitatively, far surpass all human intelligence.

The first use of the concept of a “singularity” in the technological context was John von Neumann. Stanislaw Ulam reports a discussion with von Neumann “centered on the accelerating progress of technology and changes in the mode of human life, which gives the appearance of approaching some essential singularity in the history of the race beyond which human affairs, as we know them, could not continue”. Subsequent authors have echoed this viewpoint.

I. J. Good’s “intelligence explosion” model predicts that a future superintelligence will trigger a singularity. The concept and the term “singularity” were popularized by Vernor Vinge in his 1993 essay The Coming Technological Singularity, in which he wrote that it would signal the end of the human era, as the new superintelligence would continue to upgrade itself and would advance technologically at an incomprehensible rate. He wrote that he would be surprised if it occurred before 2005 or after 2030.

Four polls, conducted in 2012 and 2013, suggested that the median estimate was a 50% chance that artificial general intelligence (AGI) would be developed by 2040–2050.

In the 2010s, public figures such as Stephen Hawking and Elon Musk expressed concern that full artificial intelligence could result in human extinction. The consequences of the singularity and its potential benefit or harm to the human race have been intensely debated.

Y2K

Apocalypticism was especially evident with the approach of the Year 2000 problem, also known as the Y2K problem, the Millennium bug, the Y2K bug, the Y2K glitch, or Y2K, is a class of computer bugs related to the formatting and storage of calendar data for dates beginning in the year 2000. Problems were anticipated, and arose, because many programs represented four-digit years with only the final two digits — making the year 2000 indistinguishable from 1900. The assumption of a twentieth-century date in such programs could cause various errors, such as the incorrect display of dates and the inaccurate ordering of automated dated records or real-time events.

In 1997, the British Standards Institute (BSI) developed standard DISC PD2000-1 defining “Year 2000 Conformity requirements” as four rules: (1) No valid date will cause any interruption in operations; (2) Calculation of durations between, or the sequence of, pairs of dates will be correct whether any dates are in different centuries; (3) In all interfaces and in all storage, the century must be unambiguous, either specified, or calculable by algorithm; (4) Year 2000 must be recognised as a leap year.

It identifies two problems that may exist in many computer programs. First, the practice of representing the year with two digits became problematic with logical error(s) arising upon “rollover” from xx99 to xx00. This had caused some date-related processing to operate incorrectly for dates and times on and after 1 January 2000, and on other critical dates which were billed “event horizons”. Without corrective action, long-working systems would break down when the “… 97, 98, 99, 00 …” ascending numbering assumption suddenly became invalid.

Secondly, some programmers had misunderstood the Gregorian calendar rule that determines whether years that are exactly divisible by 100 are not leap years, and assumed that the year 2000 would not be a leap year. In reality, there is a rule in the Gregorian calendar system that states years divisible by 400 are leap years – thus making 2000 a leap year.

Companies and organisations worldwide checked, fixed, and upgraded their computer systems to address the anticipated problem. As a result, very few computer failures were reported when the clocks rolled over into 2000.