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Encyclopedia > Doomsday event
The mushroom cloud of the atomic bombing of Nagasaki, Japan, 1945, rose some 18 km (11 mi) above the hypocenter.
The mushroom cloud of the atomic bombing of Nagasaki, Japan, 1945, rose some 18 km (11 mi) above the hypocenter.

A doomsday event is a specific occurrence which has an exceptionally destructive effect on the human race.[1] The final outcomes of doomsday events may range from a major disruption of human civilization, to the extinction of human life, to the destruction of the planet Earth, to the annihilation of the entire universe. Image File history File linksMetadata Download high-resolution version (1246x1468, 760 KB) if you look closely, you can see a japanese person in the bottom right corner TITLE: Mushroom cloud CALL NUMBER: POS 6 - U.S., no. ... Image File history File linksMetadata Download high-resolution version (1246x1468, 760 KB) if you look closely, you can see a japanese person in the bottom right corner TITLE: Mushroom cloud CALL NUMBER: POS 6 - U.S., no. ... The atomic bombing of Nagasaki, Japan on August 9, 1945 A mushroom cloud is a distinctive mushroom-shaped cloud of smoke, flame, or debris resulting from a very large explosion. ... The mushroom cloud over Hiroshima after the dropping of Little Boy. ... Year 1945 (MCMXLV) was a common year starting on Monday (link will display the full calendar). ... The hypocenter or hypocentre (literally: below the center from the Greek υπόκεντρον), may refer to the site of an earthquake or to that of a nuclear explosion. ... The end of civilization or the end of the world are phrases used in reference to human extinction scenarios, doomsday events, and related hazards which occur on a global scale. ... Human extinction is the as-yet hypothetical extinction of the human species, Homo sapiens. ... The end of planet Earth refers to hypotheses of when the Earth either completely ceases to exist as a planet or becomes uninhabitable for life. ... This box:      The ultimate fate of the universe is a topic in physical cosmology. ...


A 2006 poll by SciFi.com revealed that virtually all Americans believed that some sort of doomsday scenario could realistically impact the human race, and that many feel that such a scenario is likely to be man-made.[2] Year 2006 (MMVI) was a common year starting on Sunday of the Gregorian calendar. ... Sci Fi is an American cable television channel, launched in 1992 and currently owned by corporate conglomerate NBC Universal, specializing in science fiction, fantasy, horror, and paranormal programming. ...

Contents

Scenarios

Doomsday events may include:


Natural occurrences

These include:

  • A gamma ray burst or other devastating blast of cosmic radiation.[4] One especially deadly hypothesized source is a hypernova, produced when a hypergiant star explodes and then collapses, sending vast amounts of radiation sweeping across hundreds or even thousands of lightyears of space. Hypernovae have never been observed; however, a hypernova may have been the cause of the Ordovician-Silurian extinction events. The nearest hypergiant is Eta Carinae, approximately 8,000 light years distant.
  • A drastic increase or decrease in the Sun's energy output
  • An impact event caused by the collision of a large meteoroid, asteroid, or comet with Earth. A common theory postulates that the extinction of the dinosaurs occurred approximately 65 million years ago as a result of the Cretaceous-Tertiary extinction event when a large asteroid struck the earth, producing atmospheric dust which blocked solar energy and caused a significant lowering of temperatures worldwide. Evidence for this theory includes a sedimentary layer of iridium in the geological record and a large crater in the area of Chicxulub, Mexico. The Tunguska event (1908) was on a much smaller scale.
  • A sudden change in the physical constants governing the universe, such as that created by a Vacuum metastability event[6]

For other uses, see Pandemic (disambiguation). ... Moses Coulee showing multiple flood basalt flows of the Columbia River Basalt Group. ... This article is about volcanoes in geology. ... A supervolcano is a volcano that produces the largest and most voluminous kinds of eruption on Earth. ... The Toba eruption (the Toba event) was the largest volcanic eruption on Earth in the last 28 million years. ... Eruption column rising, Mount Redoubt, Alaska According to the Toba catastrophe theory, modern human evolution was affected by a recent, large volcanic event. ... The image above shows the optical afterglow of gamma ray burst GRB-990123 taken on January 23, 1999. ... Cosmic rays can loosely be defined as energetic particles originating outside of the Earth. ... This article needs additional references or sources for verification. ... This article does not cite its references or sources. ... A light year, abbreviated ly, is the distance light travels in one year: roughly 9. ... The Ordovician-Silurian extinction event, labeled End O here. ... Eta Carinae (η Carinae or η Car) is a highly luminous hypergiant double star. ... A pole shift theory is a hypothesis that the axis of rotation of a planet has not always been at its present-day locations or that the axis will not persist there; in other words, that its physical poles had been or will be shifted. ... Sol redirects here. ... Artists impression of a major impact event. ... For other uses, see Collision (disambiguation). ... Meteor redirects here. ... For other uses, see Asteroid (disambiguation). ... Comet Hale-Bopp Comet West For other uses, see Comet (disambiguation). ... This article is about Earth as a planet. ... The word theory has a number of distinct meanings in different fields of knowledge, depending on their methodologies and the context of discussion. ... For other uses, see Extinction (disambiguation). ... Orders & Suborders Saurischia Sauropodomorpha Theropoda Ornithischia Thyreophora Ornithopoda Marginocephalia Dinosaurs were vertebrate animals that dominated the terrestrial ecosystem for over 160 million years, first appearing approximately 230 million years ago. ... Badlands near Drumheller, Alberta where erosion has exposed the KT boundary. ... This article is about the chemical element. ... Radar topography reveals the 180 kilometer (112 mile) wide ring of the crater (image courtesy NASA/JPL-Caltech) Chicxulub Crater (IPA: ) (cheek-shoo-LOOB) is an ancient impact crater buried underneath the Yucatán Peninsula, with its center located approximately underneath the town of Chicxulub, Yucatán, Mexico. ... Chicxulub (pronounced as CHEEK-shoe-lube) is a town in the state of Yucatán, Mexico, located at 21°14′ N 89°51′ W In 2000 the town had a population of about 3,400 people. ... Trees knocked over by the Tunguska blast. ... A false vacuum is a metastable sector of a quantum field theory which appears to be a perturbative vacuum but is unstable to instanton effects which tunnel to a lower energy state. ... For other uses, see Black hole (disambiguation). ... The Big Rip is a cosmological hypothesis about the Ultimate fate of the universe, in which the matter of the universe, from stars and galaxies to atoms and subatomic particles, are progressively torn apart by the expansion of the universe at a certain time in the future. ... This article is about the cosmological theory. ...

Non-natural events

These include:

  • The creation of a black hole on or close to Earth[8]
  • Outbreak of a Zombie 'Virus'

For other uses, see Black hole (disambiguation). ... The Titan II ICBM carried a 9 Mt W53 warhead, making it one of the most powerful nuclear weapons fielded by the United States during the Cold War. ... For the use of biological agents by terrorists, see bioterrorism. ... Cybernetic revolt, more commonly known as the computers take over, is a science fiction scenario in which AIs (often a single supercomputer or a computer network) decide that humans are a threat (to either themselves or to the machines) and try to destroy or enslave them, potentially leading to Machine... Grey goo is a hypothetical end-of-the-world scenario involving molecular nanotechnology in which out-of-control self-replicating robots consume all living matter on Earth while building more of themselves (a scenario known as ecophagy). ... The alien invasion is a common theme in science fiction stories and film, in which a technologically-superior extraterrestrial society invades Earth with the intent to replace human life, or to enslave it under a colonial system, or in some cases, to use humans as food. ... This article is about the undead. ...

Supernatural events

These include:

Divine retribution is a supernatural punishment usually directed towards all or some portions of humanity by a deity. ... Judgment Day redirects here. ... Norseman redirects here; for the town of the same name see Norseman, Western Australia. ... Look up Ragnarok in Wiktionary, the free dictionary. ... For other uses, see Christian (disambiguation). ... For other uses, see Bible (disambiguation). ... Visions of John of Patmos, as depicted in the Très Riches Heures du Duc de Berry. ... For other uses, see Armageddon (disambiguation). ... This article discusses the term God in the context of monotheism and henotheism. ... This article is about the concept of Satan. ...

See also

Apocalyptic science fiction is a sub-genre of science fiction that is concerned with the end of the world or civilization, through nuclear war, plague, or some other general disaster. ... This article does not cite any references or sources. ... Look up doomsday in Wiktionary, the free dictionary. ... Minutes to Midnight redirects here, along with other titles incorporating that term. ... This article is about the theoretical world-ending destruction. ... The Doomsday argument (DA) is a probabilistic argument that claims to predict the future lifetime of the human race given only an estimate of the total number of humans born so far. ... Poster for the 1964 doomsday black comedy, . A doomsday film is a motion picture which tells the story of an actual or fictitious doomsday event and/or its aftermath. ... An extinction event (also known as: mass extinction; extinction-level event, ELE) occurs when there is a sharp decrease in the number of species in a relatively short period of time. ... He is a twat He was born in Vienna and died in Pescadero, California. ... Human extinction is the as-yet hypothetical extinction of the human species, Homo sapiens. ... For a related concept in sociology, see Social disintegration. ... Risks to civilization, humans and planet Earth are existential risks that would imperil mankind as a whole and/or have major adverse consequences for the course of human civilization, human extinction or even the end of planet Earth. ...

Notes

  1. ^ This definition of the expression "doomsday event" is directly derived from compounding the meanings of the adjective "doomsday" and noun "event":
    • Wiktionary defines doomsday (adj) as "concerned with or predicting future universal destruction" or "capable of causing widespread or total destruction" and defines event (noun) as "an occurrence of social or personal importance," with occurrence (noun) defined in turn as "actual instance where a situation arises." (Retrieved Nov. 18, 2006)
    • Random House Webster's Unabridged Electronic Dictionary (1989-1996) defines "doomsday" (adj) as "given to or marked by forebodings or predictions of impending calamity" and "capable of causing widespread or total destruction" and defines "event" (noun) as "something that happens or is regarded as happening; an occurrence, esp. one of some importance" or "something that occurs in a certain place during a particular interval of time."
  2. ^ The Doomsday Poll. SciFi.com (2006).
  3. ^ "Pandemic". Horizon. BBC. BBC Two. 2006-11-07.
  4. ^ Wanjek, Christopher (2005-04-06). Explosions in Space May Have Initiated Ancient Extinction on Earth. NASA.
  5. ^ Wilford, John Noble (2006-10-12). Study Links Extinction Cycles to Changes in Earth’s Orbit and Tilt.
  6. ^ S. Coleman and F. De Luccia (1980). "Gravitational effects on and of vacuum decay". Physical Review D21: 3305-3315. 
  7. ^ Black Holes: The Deadliest Force in the Universe. ABC News (2006-08-28).
  8. ^ Leake, Jonathan (1999-07-18). "Big Bang machine could destroy Earth". Sunday Times. 

Wiktionary (a portmanteau of wiki and dictionary) is a multilingual, Web-based project to create a free content dictionary, available in over 151 languages. ... The Random House Dictionary of the English Language, Unabridged was the original name of a large American dictionary, first published in 1966, and recently renamed the Random House Websters Unabridged Dictionary. ... For other uses, see BBC (disambiguation). ... For the BBC radio station, see BBC Radio 2. ... Year 2006 (MMVI) was a common year starting on Sunday of the Gregorian calendar. ... is the 311th day of the year (312th in leap years) in the Gregorian calendar. ... Year 2005 (MMV) was a common year starting on Saturday (link displays full calendar) of the Gregorian calendar. ... is the 96th day of the year (97th in leap years) in the Gregorian calendar. ... For other uses, see NASA (disambiguation). ... Year 2006 (MMVI) was a common year starting on Sunday of the Gregorian calendar. ... is the 285th day of the year (286th in leap years) in the Gregorian calendar. ... ABC News logo ABC News Special Report ident, circa 2006 ABC News is a division of American television and radio network ABC, owned by The Walt Disney Company. ... Year 2006 (MMVI) was a common year starting on Sunday of the Gregorian calendar. ... is the 240th day of the year (241st in leap years) in the Gregorian calendar. ...

External links

  • Countdown to Doomsday with Today Show Host Matt Lauer. SciFi.com (2006).
  • Exit Mundi, a collection of doomsday scenarios
  • Armageddon Online, A collection of doomsday scenarios & Daily News
  • Doomsday Guide, a directory devoted to end times theories
  • Top 10 Ways to Destroy Earth

 
 

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