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Science portal
Members of the Academy in 1667 with Louis XIV
Science is a systematic discipline that builds and organises knowledge in the form of testable hypotheses and predictions about the universe. Modern science is typically divided into two or three major branches: the natural sciences (e.g., physics, chemistry, and biology), which study the physical world; and the behavioural sciences (e.g., economics, psychology, and sociology), which study individuals and societies. The formal sciences (e.g., logic, mathematics, and theoretical computer science), which study formal systems governed by axioms and rules, are sometimes described as being sciences as well; however, they are often regarded as a separate field because they rely on deductive reasoning instead of the scientific method or empirical evidence as their main methodology. Applied sciences are disciplines that use scientific knowledge for practical purposes, such as engineering and medicine. (Full article...)
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Featured articles are displayed here, which represent some of the best content on English Wikipedia.-
Eta Carinae (η Carinae, abbreviated to η Car), formerly known as Eta Argus, is a stellar system containing at least two stars with a combined luminosity greater than five million times that of the Sun, located around 7,500 light-years (2,300 parsecs) distant in the constellation Carina. Previously a 4th-magnitude star, it brightened in 1837 to become brighter than Rigel, marking the start of its so-called "Great Eruption". It became the second-brightest star in the sky between 11 and 14 March 1843 before fading well below naked-eye visibility after 1856. In a smaller eruption, it reached 6th magnitude in 1892 before fading again. It has brightened consistently since about 1940, becoming brighter than magnitude 4.5 by 2014. (Full article...) -
Horse-flies and deer flies are true flies in the family Tabanidae in the insect order Diptera. The adults are often large and agile in flight. Only female horseflies bite land vertebrates, including humans, to obtain blood. They prefer to fly in sunlight, avoiding dark and shady areas, and are inactive at night. They are found all over the world except for some islands and the polar regions (Hawaii, Greenland, Iceland). Both horse-flies and botflies (Oestridae) are sometimes referred to as gadflies. (Full article...) -
A cooperative pulling experiment with dogs
The cooperative pulling paradigm is an experimental design in which two or more animals pull rewards toward themselves via an apparatus that they cannot successfully operate alone. Researchers (ethologists, comparative psychologists, and evolutionary psychologists) use cooperative pulling experiments to try to understand how cooperation works and how and when it may have evolved. (Full article...) -
Imperator torosus, commonly known as the brawny bolete, is a species of bolete fungus in the family Boletaceae. It is native to southern Europe east to the Caucasus and Israel. It is generally associated with deciduous trees such as hornbeam, oak and beech in warm, dry locales. Although generally rare in Europe, it appears to be relatively common in Hungary. Appearing in summer and autumn on chalky soils, the stocky fruit bodies have an ochre cap up to 20 cm (8 in) across, yellow pores on the cap underside, and a wine-red to brown or blackish stipe up to 6–15 cm (2.4–5.9 in) long by 3–6 cm (1.2–2.4 in) wide. The pale yellow flesh changes to different colours when broken or bruised depending on age; younger mushrooms become reddish, and older ones additionally take on bluish tones. (Full article...) -
The Thoroughbred is a horse breed developed for horse racing. Although the word thoroughbred is sometimes used to refer to any breed of purebred horse, it technically refers only to the Thoroughbred breed. Thoroughbreds are considered "hot-blooded" horses that are known for agility, speed, and spirit. (Full article...) -
The common starling (Sturnus vulgaris), also known as the European starling in North America and simply as the starling in Great Britain and Ireland, is a medium-sized passerine bird in the starling family, Sturnidae. It is about 20 cm (8 in) long and has glossy black plumage with a metallic sheen, which is speckled with white at some times of the year. The legs are pink and the bill is black in winter and yellow in summer; young birds have browner plumage than the adults. It is a noisy bird, especially in communal roosts and other gregarious situations, with an unmusical but varied song. Its gift for mimicry has been noted in literature including the Mabinogion and the works of Pliny the Elder and William Shakespeare. (Full article...) -
Bryce Canyon National Park (/braɪs/) is a national park of the United States located in southwestern Utah. The major feature of the park is Bryce Canyon, which despite its name, is not a canyon, but a collection of giant natural amphitheaters along the eastern side of the Paunsaugunt Plateau. Bryce is distinctive due to geological structures called hoodoos, formed by frost weathering and stream erosion of the river and lake bed sedimentary rock. The red, orange, and white colors of the rocks provide spectacular views for park visitors. Bryce Canyon National Park is much smaller and sits at a much higher elevation than nearby Zion National Park. The rim at Bryce varies from 8,000 to 9,000 feet (2,400 to 2,700 m). (Full article...) -
The quagga (/ˈkwɑːxɑː/ or /ˈkwæɡə/) (Equus quagga quagga) is an extinct subspecies of the plains zebra that was endemic to South Africa until it was hunted to extinction in the late 19th century. It was long thought to be a distinct species, but early genetic studies have supported it being a subspecies of plains zebra. A more recent study suggested that it was the southernmost cline or ecotype of the species. (Full article...) -
The Japanese fire-bellied newt or Japanese fire-bellied salamander (Cynops pyrrhogaster) is a species of newt endemic to Japan. The skin on its upper body is dark and its lower regions bright red, although coloration varies with age, genetics, and region. Adults are 8 to 15 cm (3.1 to 5.9 in) long. To deter predators, Japanese fire-bellied newts contain high levels of tetrodotoxin, a neurotoxin accumulated mainly from their diet. (Full article...) -
Norton Priory is a historic site in Norton, Runcorn, Cheshire, England, comprising the remains of an abbey complex dating from the 12th to 16th centuries, and an 18th-century country house; it is now a museum. The remains are a scheduled ancient monument and are recorded in the National Heritage List for England as a designated Grade I listed building. They are considered to be the most important monastic remains in Cheshire. (Full article...) -
The black-and-red broadbill (Cymbirhynchus macrorhynchos) is a species of bird in the typical broadbill family, Eurylaimidae. It is the only species in the genus Cymbirhynchus. A large, distinctive bird, it has maroon underparts, black upperparts, a maroon neck-band, and white bars on the wings. It also has a large, two-colored, blue-and-yellow bill. The species shows slight sexual dimorphism, with females being smaller than males. No other bird in its range resembles it, though the black-and-yellow broadbill has a similar call. (Full article...) -
Fuck: Word Taboo and Protecting Our First Amendment Liberties is a nonfiction book by law professor Christopher M. Fairman about freedom of speech, the First Amendment to the United States Constitution, censorship, and use of the word fuck in society. The book was first published in 2009 by Sphinx as a follow-up on the author's article "Fuck", published in 2007 in the Cardozo Law Review. It cites studies from academics in social science, psychoanalysis, and linguistics. Fairman establishes that most current usages of the word have connotations distinct from its meaning of sexual intercourse. The book discusses the efforts of conservatives in the United States to censor the word from common parlance. The author says that legal precedent regarding its use is unclear because of contradictory court decisions. Fairman argues that once citizens allow the government to restrict the use of specific words, this will infringe upon freedom of thought. (Full article...) -
A satellite image of the lower Florida peninsula showing darkened portions south of Lake Okeechobee as the Everglades and Big Cypress Swamp. The reddish area bordering the large inland lake is the Everglades Agricultural Area.
Before drainage, the Everglades, a region of tropical wetlands in southern Florida, were an interwoven mesh of marshes and prairies covering 4,000 square miles (10,000 km2). The Everglades is both a vast watershed that has historically extended from Lake Okeechobee 100 miles (160 km) south to Florida Bay (around one-third of the southern Florida peninsula), and many interconnected ecosystems within a geographic boundary. It is such a unique meeting of water, land, and climate that the use of either singular or plural to refer to the Everglades is appropriate. When Marjory Stoneman Douglas wrote her definitive description of the region in 1947, she used the metaphor "River of Grass" to explain the blending of water and plant life. (Full article...) -
Heptamegacanthus is a genus of acanthocephalans (thorny-headed or spiny-headed parasitic worms) containing a single species, Heptamegacanthus niekerki, that is a parasite of the endangered giant golden mole. It is found only in isolated forests in the Transkei and near East London, both in South Africa. The worms are about 4 mm long and 2 mm wide with minimal sexual dimorphism. Its body consists of a short, wide trunk and a tubular feeding and sucking organ called the proboscis which is covered with hooks. The hooks are used to pierce and hold the rectal wall of its host. There are 40 to 45 of these hooks arranged in rings surrounding the proboscis. They are not radially symmetrical. There are seven large anterior hooks; the hooks in the anterior ring are twice as large as those in the second ring and the remaining hooks decrease progressively in size posteriorly. (Full article...)
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Bone Sharps, Cowboys, and Thunder Lizards: A Tale of Edward Drinker Cope, Othniel Charles Marsh, and the Gilded Age of Paleontology is a 2005 graphic novel written by Jim Ottaviani and illustrated by the company Big Time Attic. The book tells a fictionalized account of the Bone Wars, a period of intense excavation, speculation, and rivalry in the late 19th century that led to a greater understanding of dinosaurs and other prehistoric life. Bone Sharps follows the two scientists Edward Drinker Cope and Othniel Marsh as they engage in an intense competition for prestige and discoveries in the western United States. Along the way, the scientists interact with historical figures of the Gilded Age, including P. T. Barnum and Ulysses S. Grant. (Full article...)
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Featured pictures
Featured pictures about Science.-
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Vibrating glass beam at Euler–Bernoulli beam theory, by Ben pcc (from Wikipedia:Featured pictures/Sciences/Others) -
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Archaeologists prospecting Santa Ana Cave at Excavation (archaeology), by Mario modesto (from Wikipedia:Featured pictures/Sciences/Others) -
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Color cathodoluminescence of a diamond, by Pavel.Somov (from Wikipedia:Featured pictures/Sciences/Others) -
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Archaeological excavation at Atapuerca Mountains, by Mario modesto (from Wikipedia:Featured pictures/Sciences/Others) -
Animation of a water drop, by Chris 73 and Gmaxwell (from Wikipedia:Featured pictures/Sciences/Others) -
Section of the Large Hadron Collider, by Maximilien Brice (from Wikipedia:Featured pictures/Sciences/Others) -
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Toroid magnets of the ATLAS detector, by Maximilien Brice, CERN (edited by Bammesk) (from Wikipedia:Featured pictures/Sciences/Others) -
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Peruvian Andes at United States Exploring Expedition, by Alfred Thomas Agate (edited by Durova) (from Wikipedia:Featured pictures/Sciences/Others) -
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Parallax, by Mila Zinkova (edited by Richard Bartz) (from Wikipedia:Featured pictures/Sciences/Others) -
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Projectile motion of a bouncing ball at Inelastic collision, by MichaelMaggs (from Wikipedia:Featured pictures/Sciences/Others) -
Translational motion at Thermodynamic temperature, by Greg L (from Wikipedia:Featured pictures/Sciences/Others) -
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Mechanical advantage device, by Prolineserver (edited by Tomia, Ss181292 and Atropos235) (from Wikipedia:Featured pictures/Sciences/Others) -
Simulation of liquids with different viscosities, by Synapticrelay (from Wikipedia:Featured pictures/Sciences/Others) -
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Global oceanic and terrestrial photoautotroph abundance at Primary production, by SeaWiFS Project (from Wikipedia:Featured pictures/Sciences/Others) -
Drop impact on a liquid surface, by José Manuel Suárez (from Wikipedia:Featured pictures/Sciences/Others) -
NASA study on wingtip vortices at Wake turbulence, by Langley Research Center (edited by Fir0002) (from Wikipedia:Featured pictures/Sciences/Others) -
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Nobel Prize in Physics diploma, by Sofia Gisberg (restored by Jebulon) (from Wikipedia:Featured pictures/Sciences/Others)
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Vital articles
Vital articles to understand Science.
Writing is the act of creating a persistent representation of human language. A writing system uses a set of symbols and rules to encode aspects of spoken language, such as its lexicon and syntax. However, written language may take on characteristics distinct from those of any spoken language. (Full article...)
Did you know...
Did you know it about Science?
- ... that the psychological inner space genre was a rebellion against the traditional focus of science fiction on literal outer space?
- ... that the best novel of American science fiction author Garrett Smith did not appear as a stand-alone book until over 60 years after his death?
- ... that Guy Parmelin, now President of Switzerland, opened the study program of cyber security of the Lucerne School of Information Technology in 2018?
- ... that the Alexander McQueen collection Neptune drew negative reviews comparing the clothing to 1980s science fiction, Xena, and Wonder Woman?
- ... that the Springfield Science Museum is home to the oldest operating projection planetarium in the United States?
- ... that Flyover, a 2023 science fiction novel by an American author, portraying a dystopian future where part of the US becomes a theocracy, was published in French but not in English?
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For editor resources and to collaborate with other editors on improving Wikipedia's Science-related articles, visit WikiProject Science.
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Science News
- 5 November 2024 –
- Researchers at Kyoto University in Japan launch LignoSat, the world's first wooden satellite constructed without screws or glue, into space. It will orbit Earth for six months. (DW)
- 10 October 2024 –
- In its annual Living Planet report, the World Wildlife Fund estimates that wild populations of animal species have decreased over 70% since 1970, with some high-biodiversity areas seeing up to 95% declines. (DW)
- 10 October 2024 – Tomb of Christopher Columbus
- Researchers from the University of Granada confirm that bones lying in the Seville Cathedral in Seville, Andalusia, Spain, belonged to Christopher Columbus. (ABC Spain)
- 9 October 2024 – Nobel Prize in Chemistry
- This year's Nobel Prize in Chemistry is jointly awarded to British computer scientist Demis Hassabis and American chemist John M. Jumper for their work on protein structure prediction, and to American biochemist and computational biologist David Baker for his work on computational protein design. (The New York Times) (Nobel Prize)
- 8 October 2024 – Nobel Prize in Physics
- American physicist John Hopfield and British-Canadian computer scientist Geoffrey Hinton are awarded this year's Nobel Prize in Physics "for foundational discoveries and inventions that enable machine learning with artificial neural networks". (The Guardian)
- 24 September 2024 –
- Scientists from the University of Waterloo announce that they have positively identified bones found on King William Island in Nunavut, Canada, as those of James Fitzjames, captain of HMS Erebus during Franklin's lost expedition. (CBC News)
Related portals
Top 10 WikiProject Science Popular articles of the month -
This following Science-related articles is a most visited articles of WikiProject Science, See complete list at Wikipedia:WikiProject Science/Popular pages.
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Earth is the third planet from the Sun and the only astronomical object known to harbor life. This is enabled by Earth being an ocean world, the only one in the Solar System sustaining liquid surface water. Almost all of Earth's water is contained in its global ocean, covering 70.8% of Earth's crust. The remaining 29.2% of Earth's crust is land, most of which is located in the form of continental landmasses within Earth's land hemisphere. Most of Earth's land is at least somewhat humid and covered by vegetation, while large sheets of ice at Earth's polar deserts retain more water than Earth's groundwater, lakes, rivers and atmospheric water combined. Earth's crust consists of slowly moving tectonic plates, which interact to produce mountain ranges, volcanoes, and earthquakes. Earth has a liquid outer core that generates a magnetosphere capable of deflecting most of the destructive solar winds and cosmic radiation. (Full article...) -
Artificial intelligence (AI), in its broadest sense, is intelligence exhibited by machines, particularly computer systems. It is a field of research in computer science that develops and studies methods and software that enable machines to perceive their environment and use learning and intelligence to take actions that maximize their chances of achieving defined goals. Such machines may be called AIs. (Full article...)
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Sci-Hub is a shadow library website that provides free access to millions of research papers, regardless of copyright, by bypassing publishers' paywalls in various ways. Unlike Library Genesis, it does not provide access to books. Sci-Hub was founded in Kazakhstan by Alexandra Elbakyan in 2011, in response to the high cost of research papers behind paywalls (see Serials crisis). The site is extensively used worldwide. In September 2019, the site's operator(s) said that it served approximately 400,000 requests per day.
In addition to its intensive use, Sci-Hub stands out among other shadow libraries because of its easy use/reliability and because of the enormous size of its collection; a 2018 study estimated that Sci-Hub provided access to most of the scholarly publications with issued DOI numbers. On 15 July 2022, Sci-Hub reported that its collection comprised 88,343,822 files. Since December 2020, the site has paused uploads due to legal troubles. (Full article...) -
A plot of normal distribution (or bell-shaped curve) where each band has a width of 1 standard deviation – See also: 68–95–99.7 rule.
In statistics, the standard deviation is a measure of the amount of variation of the values of a variable about its mean. A low standard deviation indicates that the values tend to be close to the mean (also called the expected value) of the set, while a high standard deviation indicates that the values are spread out over a wider range. The standard deviation is commonly used in the determination of what constitutes an outlier and what does not. (Full article...) -
Ejaculation is the discharge of semen (the ejaculate; normally containing sperm) from the testicles through the penis and out the urethra. It is the final stage and natural objective of male sexual stimulation, and an essential component of natural conception. After forming an erection, many men emit pre-ejaculatory fluid during stimulation prior to ejaculating. Ejaculation involves involuntary contractions of the pelvic floor and is normally linked with orgasm. It is a normal part of male human sexual development. (Full article...) -
Science is a systematic discipline that builds and organises knowledge in the form of testable hypotheses and predictions about the universe. Modern science is typically divided into two or three major branches: the natural sciences (e.g., physics, chemistry, and biology), which study the physical world; and the behavioural sciences (e.g., economics, psychology, and sociology), which study individuals and societies. The formal sciences (e.g., logic, mathematics, and theoretical computer science), which study formal systems governed by axioms and rules, are sometimes described as being sciences as well; however, they are often regarded as a separate field because they rely on deductive reasoning instead of the scientific method or empirical evidence as their main methodology. Applied sciences are disciplines that use scientific knowledge for practical purposes, such as engineering and medicine. (Full article...)
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Google Scholar is a freely accessible web search engine that indexes the full text or metadata of scholarly literature across an array of publishing formats and disciplines. Released in beta in November 2004, the Google Scholar index includes peer-reviewed online academic journals and books, conference papers, theses and dissertations, preprints, abstracts, technical reports, and other scholarly literature, including court opinions and patents. (Full article...) -
The Massachusetts Institute of Technology (MIT) is a private research university in Cambridge, Massachusetts, United States. Established in 1861, MIT has played a significant role in the development of many areas of modern technology and science. (Full article...) -
The expansion of the universe according to the Big Bang theory in physics
Physics is the scientific study of matter, its fundamental constituents, its motion and behavior through space and time, and the related entities of energy and force. Physics is one of the most fundamental scientific disciplines. A scientist who specializes in the field of physics is called a physicist. (Full article...) -
In biology, taxonomy (from Ancient Greek τάξις (taxis) 'arrangement' and -νομία (-nomia) 'method') is the scientific study of naming, defining (circumscribing) and classifying groups of biological organisms based on shared characteristics. Organisms are grouped into taxa (singular: taxon) and these groups are given a taxonomic rank; groups of a given rank can be aggregated to form a more inclusive group of higher rank, thus creating a taxonomic hierarchy. The principal ranks in modern use are domain, kingdom, phylum (division is sometimes used in botany in place of phylum), class, order, family, genus, and species. The Swedish botanist Carl Linnaeus is regarded as the founder of the current system of taxonomy, as he developed a ranked system known as Linnaean taxonomy for categorizing organisms and binomial nomenclature for naming organisms. (Full article...)
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