Science is a systematic discipline that builds and organises knowledge in the form of testable explanations about nature and society. It is driven by the scientific method: an empirical cycle that typically involves making observations, producing hypotheses, testing them with evidence, and drawing conclusions. Science encompasses this process and the body of knowledge it produces, which the scientific community continuously challenges, validates, and organises. (Full article...)
Featured articles are displayed here, which represent some of the best content on English Wikipedia.
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The Temple of Eshmun (Arabic: معبد أشمون) is an ancient place of worship dedicated to Eshmun, the Phoenician god of healing. It is located near the Awali river, 2 kilometres (1.2mi) northeast of Sidon in southwestern Lebanon. The site was occupied from the 7th century BC to the 8th century AD, suggesting an integrated relationship with the nearby city of Sidon. Although originally constructed by Sidonian king Eshmunazar II in the Achaemenid era (c. 529–333BC) to celebrate the city's recovered wealth and stature, the temple complex was greatly expanded by Bodashtart, Yatonmilk and later monarchs. Because the continued expansion spanned many centuries of alternating independence and foreign hegemony, the sanctuary features a wealth of different architectural and decorative styles and influences. (Full article...)
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The Galápagos tortoise (Chelonoidis niger), also called the Galápagos giant tortoise, is a very large species of tortoise in the genusChelonoidis (which also contains three smaller species from mainland South America). The species comprises 15 subspecies (12 extant and 3 extinct). It is the largest living species of tortoise, and can weigh up to 417kg (919lb). They are also the largest extant terrestrial cold-blooded animals (ectotherms). (Full article...)
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Flatey Island, Western Iceland
The Arctic tern (Sterna paradisaea) is a tern in the familyLaridae. This bird has a circumpolar breeding distribution covering the Arctic and subarctic regions of Europe (as far south as Brittany), Asia, and North America (as far south as Massachusetts). The species is strongly migratory, seeing two summers each year as it migrates along a convoluted route from its northern breeding grounds to the Antarctic coast for the southern summer and back again about six months later. Recent studies have shown average annual round-trip lengths of about 70,900km (38,300nmi) for birds nesting in Iceland and Greenland, and about 48,700km (26,300nmi) for birds nesting in the Netherlands, while an individual from the Farne Islands in Northumberland with a light level geolocator tag covered a staggering 96,000km (52,000nmi) in ten months from the end of one breeding season to the start of the next. These are by far the longest migrations known in the animal kingdom. (Full article...)
The emperor penguin (Aptenodytes forsteri) is the tallest and heaviest of all living penguin species and is endemic to Antarctica. The male and female are similar in plumage and size, reaching 100cm (39in) in length and weighing from 22 to 45kg (49 to 99lb). Feathers of the head and back are black and sharply delineated from the white belly, pale-yellow breast and bright-yellow ear patches. (Full article...)
The mandrill (Mandrillus sphinx) is a large Old World monkey native to west central Africa. It is one of the most colorful mammals in the world, with red and blue skin on its face and posterior. The species is sexually dimorphic, as males have a larger body, longer canine teeth and brighter coloring. Its closest living relative is the drill, with which it shares the genusMandrillus. Both species were traditionally thought to be baboons, but further evidence has shown that they are more closely related to white-eyelid mangabeys. (Full article...)
The Cat's Eye Nebula (also known as NGC 6543 and Caldwell 6) is a planetary nebula in the northern constellation of Draco, discovered by William Herschel on February 15, 1786. It was the first planetary nebula whose spectrum was investigated by the English amateur astronomer William Huggins, demonstrating that planetary nebulae were gaseous and not stellar in nature. Structurally, the object has had high-resolution images by the Hubble Space Telescope revealing knots, jets, bubbles and complex arcs, being illuminated by the central hot planetary nebula nucleus (PNN). It is a well-studied object that has been observed from radio to X-ray wavelengths. At the centre of the Cat's Eye Nebula is a dying Wolf–Rayet star, the sort of which can be seen in the Webb Telescope's image of WR 124. The Cat's Eye Nebula's central star shines at magnitude +11.4. Hubble Space Telescope images show a sort of dart board pattern of concentric rings emanating outwards from the centre. (Full article...)
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Abutiu (Ancient Egyptian: 𓂝𓃀𓅱𓄿𓃡; died before 2280 BC), also transcribed as Abuwtiyuw, was an Egyptian dog and one of the earliest documented domestic animals whose name is known. He is believed to have been a royal guard dog who lived in the Sixth Dynasty (2345–2181BC), and received an elaborate ceremonial burial in the Giza Necropolis at the behest of a pharaoh whose name is unknown. (Full article...)
Female genital mutilation (FGM) (also known as female genital cutting, female genital mutilation/cutting (FGM/C) and female circumcision) is the cutting or removal of some or all of the vulva for non-medical reasons. FGM prevalence varies worldwide, but is significantly present in some countries of Africa, Asia, and the Middle East, and within their diasporas. As of 2024[update], UNICEF estimates that more than 230 million girls and women worldwide had been subjected to one or more types of FGM, including over 144 million in Africa, over 80 million in Asia, over 6 million in the Middle East, and another 1–2 million in small practising communities and countries of migration elsewhere. This total was 30 million (15%) higher than UNICEF's 2016 estimate; although FGM is not becoming more common globally, UNICEF notes that progress towards eliminating the practice remains too slow and is being outpaced by population growth, particularly where FGM is most prevalent. (Full article...)
The Caerleon pipe burial is a second-century Roman grave from a cemetery associated with the former legionary fortress and settlement, Isca Augusta, in what is now Caerleon, Wales, United Kingdom. The main site, including its large amphitheatre, was excavated in the early twentieth century, largely by the archaeologist Tessa Wheeler, but its surrounding cemeteries were mainly known only through casual discoveries. (Full article...)
Akodon spegazzinii, also known as Spegazzini's akodont or Spegazzini's grass mouse, is a rodent in the genus Akodon found in northwestern Argentina. It occurs in grassland and forest at 400 to 3,500m (1,300 to 11,500ft) above sea level. After the species was first named in 1897, several other names were given to various populations now included in A.spegazzinii. They are now all recognized as part of a single, widespread and variable species. Akodon spegazzinii is related to Akodon boliviensis and other members of the A.boliviensisspecies group. It reproduces year-round. Because it is widely distributed and common, Akodon spegazzinii is listed as "least concern" on the IUCN Red List. (Full article...)
An illustration of the helium atom, depicting the nucleus (pink) and the electron cloud distribution (black). The nucleus (upper right) in helium-4 is in reality spherically symmetric and closely resembles the electron cloud, although for more complicated nuclei this is not always the case. The black bar is one angstrom (10−10m or 100pm).
Atoms are the basic particles of the chemical elements and the fundamental building blocks of matter. An atom consists of a nucleus of protons and generally neutrons, surrounded by an electromagnetically bound swarm of electrons. The chemical elements are distinguished from each other by the number of protons that are in their atoms. For example, any atom that contains 11 protons is sodium, and any atom that contains 29 protons is copper. Atoms with the same number of protons but a different number of neutrons are called isotopes of the same element. (Full article...)
... that Setkya Dewi, chief queen of Burma, studied Western astronomy and English and was once gifted a telescope by a British envoy because of her interest in science?
... that Na drugą planetę, published in 1895 as one of the earliest Polish science-fiction novels, was later criticized by communist-era censors for its perceived "adoration for America"?
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Science is a systematic discipline that builds and organises knowledge in the form of testable explanations about nature and society. It is driven by the scientific method: an empirical cycle that typically involves making observations, producing hypotheses, testing them with evidence, and drawing conclusions. Science encompasses this process and the body of knowledge it produces, which the scientific community continuously challenges, validates, and organises. (Full article...)
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Sci-Hub is a shadow library 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 rising costs of research papers behind paywalls. 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 and reliability, as well as the enormous size of its collection. A 2018 study estimated that Sci-Hub provided access to almost all scholarly publications. On 15 July 2022, Sci-Hub reported that its collection comprised 88,343,822 files. In December 2020, the site paused uploads due to legal troubles. Since then, the site has archived a much lower fraction of new articles. (Full article...)
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In biology, taxonomy (fromAncient Greekτάξις (taxis)'arrangement'and-νομία (-nomia)'method') is the scientific study of naming, defining (circumscribing) and classifying groups of biological organisms based on shared characteristics. Modern approaches prioritize common ancestry and evolutionary relationships. 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, having developed a ranked system known as Linnaean taxonomy for categorizing organisms. (Full article...)
Featured articles are displayed here, which represent some of the best content on English Wikipedia.
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Simulation of liquids with different viscosities, by Synapticrelay (from Wikipedia:Featured pictures/Sciences/Others)
Projectile motion of a bouncing ball at Inelastic collision, by MichaelMaggs (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)
Global oceanic and terrestrial photoautotroph abundance at Primary production, by SeaWiFS Project (from Wikipedia:Featured pictures/Sciences/Others)
Parallax, by Mila Zinkova (edited by Richard Bartz) (from Wikipedia:Featured pictures/Sciences/Others)
A patient being treated for COVID-19, by Gustavo Basso (from Wikipedia:Featured pictures/Sciences/Others)
Toroid magnets of the ATLAS detector, by Maximilien Brice, CERN (edited by Bammesk) (from Wikipedia:Featured pictures/Sciences/Others)
Color cathodoluminescence of a diamond, by Pavel.Somov (from Wikipedia:Featured pictures/Sciences/Others)
Archaeologists prospecting Santa Ana Cave at Excavation (archaeology), by Mario modesto (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)
Archaeological excavation at Atapuerca Mountains, by Mario modesto (from Wikipedia:Featured pictures/Sciences/Others)
Peruvian Andes at United States Exploring Expedition, by Alfred Thomas Agate (edited by Durova) (from Wikipedia:Featured pictures/Sciences/Others)
Vibrating glass beam at Euler–Bernoulli beam theory, by Ben pcc (from Wikipedia:Featured pictures/Sciences/Others)
Nobel Prize in Physics diploma, by Sofia Gisberg (restored by Jebulon) (from Wikipedia:Featured pictures/Sciences/Others)
Drop impact on a liquid surface, by José Manuel Suárez (from Wikipedia:Featured pictures/Sciences/Others)
Translational motion at Thermodynamic temperature, by Greg L (from Wikipedia:Featured pictures/Sciences/Others)
Mechanical advantage device, by Prolineserver (edited by Tomia, Ss181292 and Atropos235) (from Wikipedia:Featured pictures/Sciences/Others)
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