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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 social sciences (e.g., economics, psychology, and sociology), which study individuals and societies. Applied sciences are disciplines that use scientific knowledge for practical purposes, such as engineering and medicine. While sometimes referred to as the formal sciences, the study of logic, mathematics, and theoretical computer science (which study formal systems governed by axioms and rules) are typically regarded as separate because they rely on deductive reasoning instead of the scientific method or empirical evidence as their main methodology. (Full article...)

Outline of science

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  • Image 1 M-theory is a theory in physics that unifies all consistent versions of superstring theory. Edward Witten first conjectured the existence of such a theory at a string theory conference at the University of Southern California in 1995. Witten's announcement initiated a flurry of research activity known as the second superstring revolution. Prior to Witten's announcement, string theorists had identified five versions of superstring theory. Although these theories initially appeared to be very different, work by many physicists showed that the theories were related in intricate and nontrivial ways. Physicists found that apparently distinct theories could be unified by mathematical transformations called S-duality and T-duality. Witten's conjecture was based in part on the existence of these dualities and in part on the relationship of the string theories to a field theory called eleven-dimensional supergravity. (Full article...)
    M-theory is a theory in physics that unifies all consistent versions of superstring theory. Edward Witten first conjectured the existence of such a theory at a string theory conference at the University of Southern California in 1995. Witten's announcement initiated a flurry of research activity known as the second superstring revolution. Prior to Witten's announcement, string theorists had identified five versions of superstring theory. Although these theories initially appeared to be very different, work by many physicists showed that the theories were related in intricate and nontrivial ways. Physicists found that apparently distinct theories could be unified by mathematical transformations called S-duality and T-duality. Witten's conjecture was based in part on the existence of these dualities and in part on the relationship of the string theories to a field theory called eleven-dimensional supergravity. (Full article...)
  • Image 2 The water rail, western water rail or European water rail (Rallus aquaticus) is a bird of the rail family which breeds in well-vegetated wetlands across Europe, Asia and North Africa. Northern and eastern populations are migratory, but this species is a permanent resident in the warmer parts of its breeding range. The adult is 23–28 cm (9–11 in) long, and, like other rails, has a body that is flattened laterally, allowing it easier passage through the reed beds it inhabits. It has mainly brown upperparts and blue-grey underparts, black barring on the flanks, long toes, a short tail and a long reddish bill. Immature birds are generally similar in appearance to the adults, but the blue-grey in the plumage is replaced by buff. The downy chicks are black, as with all rails. The former subspecies R. indicus has distinctive markings and a call that is very different from the pig-like squeal of the western races, and is now usually split as a separate species, the brown-cheeked rail. (Full article...)

    The water rail, western water rail or European water rail (Rallus aquaticus) is a bird of the rail family which breeds in well-vegetated wetlands across Europe, Asia and North Africa. Northern and eastern populations are migratory, but this species is a permanent resident in the warmer parts of its breeding range. The adult is 23–28 cm (9–11 in) long, and, like other rails, has a body that is flattened laterally, allowing it easier passage through the reed beds it inhabits. It has mainly brown upperparts and blue-grey underparts, black barring on the flanks, long toes, a short tail and a long reddish bill. Immature birds are generally similar in appearance to the adults, but the blue-grey in the plumage is replaced by buff. The downy chicks are black, as with all rails. The former subspecies R. indicus has distinctive markings and a call that is very different from the pig-like squeal of the western races, and is now usually split as a separate species, the brown-cheeked rail. (Full article...)
  • Image 3 A pair (male on left and female on right) The red-tailed black cockatoo (Calyptorhynchus banksii) also known as Banksian- or Banks' black cockatoo, is a large black cockatoo native to Australia. Adult males have a characteristic pair of bright red panels on the tail that gives the species its name. It is more common in the drier parts of the continent. Five subspecies are recognised, differing chiefly in beak size. Although the more northerly subspecies are widespread, the two southern subspecies, the forest red-tailed black cockatoo and the south-eastern red-tailed black cockatoo are under threat. (Full article...)

    A pair (male on left and female on right)

    The red-tailed black cockatoo (Calyptorhynchus banksii) also known as Banksian- or Banks' black cockatoo, is a large black cockatoo native to Australia. Adult males have a characteristic pair of bright red panels on the tail that gives the species its name. It is more common in the drier parts of the continent. Five subspecies are recognised, differing chiefly in beak size. Although the more northerly subspecies are widespread, the two southern subspecies, the forest red-tailed black cockatoo and the south-eastern red-tailed black cockatoo are under threat. (Full article...)
  • Image 4 Holotype left tibiotarsus in two views The St. Croix macaw (Ara autocthones) or Puerto Rican macaw is an extinct species of macaw whose remains have been found on the Caribbean islands of St. Croix and Puerto Rico. It was described in 1937 based on a tibiotarsus leg bone unearthed from a kitchen midden at a pre-Columbian site on St. Croix. A second specimen consisting of various bones from a similar site on Puerto Rico was described in 2008, while a coracoid from Montserrat may belong to this or another extinct species of macaw. The St. Croix macaw is one of 13 extinct macaw species that have been proposed to have lived on the Caribbean islands. Macaws were frequently transported long distances by humans in prehistoric and historical times, so it is impossible to know whether species known only from bones or accounts were native or imported. (Full article...)

    Holotype left tibiotarsus in two views

    The St. Croix macaw (Ara autocthones) or Puerto Rican macaw is an extinct species of macaw whose remains have been found on the Caribbean islands of St. Croix and Puerto Rico. It was described in 1937 based on a tibiotarsus leg bone unearthed from a kitchen midden at a pre-Columbian site on St. Croix. A second specimen consisting of various bones from a similar site on Puerto Rico was described in 2008, while a coracoid from Montserrat may belong to this or another extinct species of macaw. The St. Croix macaw is one of 13 extinct macaw species that have been proposed to have lived on the Caribbean islands. Macaws were frequently transported long distances by humans in prehistoric and historical times, so it is impossible to know whether species known only from bones or accounts were native or imported. (Full article...)
  • Image 5 Commander Pete Conrad studies the Surveyor 3 spacecraft, which had landed two years previously; the Apollo Lunar Module, Intrepid, can be seen at top right. Apollo 12 (November 14–24, 1969) was the sixth crewed flight in the United States Apollo program and the second to land on the Moon. It was launched on November 14, 1969, by NASA from the Kennedy Space Center in Florida. Commander Charles "Pete" Conrad and Lunar Module Pilot Alan L. Bean completed just over one day and seven hours of lunar surface activity while Command Module Pilot Richard F. Gordon remained in lunar orbit. (Full article...)

    Commander Pete Conrad studies the Surveyor 3 spacecraft, which had landed two years previously; the Apollo Lunar Module, Intrepid, can be seen at top right.

    Apollo 12 (November 14–24, 1969) was the sixth crewed flight in the United States Apollo program and the second to land on the Moon. It was launched on November 14, 1969, by NASA from the Kennedy Space Center in Florida. Commander Charles "Pete" Conrad and Lunar Module Pilot Alan L. Bean completed just over one day and seven hours of lunar surface activity while Command Module Pilot Richard F. Gordon remained in lunar orbit. (Full article...)
  • Image 6 The Beagle is a small breed of scent hound, similar in appearance to the much larger foxhound. The beagle was developed primarily for hunting rabbit or hare, known as beagling. Possessing a great sense of smell and superior tracking instincts, the Beagle is the primary breed used as a detection dog for prohibited agricultural imports and foodstuffs in quarantine around the world. The beagle is a popular pet due to its size and good temper. (Full article...)
    The Beagle is a small breed of scent hound, similar in appearance to the much larger foxhound. The beagle was developed primarily for hunting rabbit or hare, known as beagling. Possessing a great sense of smell and superior tracking instincts, the Beagle is the primary breed used as a detection dog for prohibited agricultural imports and foodstuffs in quarantine around the world. The beagle is a popular pet due to its size and good temper. (Full article...)
  • Image 7 Tatsuguchi soon after his induction into the Imperial Japanese Army in 1941 and his initial assignment to the First Imperial Guard Regiment in Tokyo Paul Nobuo Tatsuguchi (辰口 信夫, Tatsuguchi Nobuo), sometimes mistakenly referred to as Nebu Tatsuguchi (August 31, 1911 – May 30, 1943), was a Japanese soldier and surgeon who served in the Imperial Japanese Army (IJA) during World War II. He was killed during the Battle of Attu on Attu Island, Alaska, United States, on May 30, 1943. (Full article...)

    Tatsuguchi soon after his induction into the Imperial Japanese Army in 1941 and his initial assignment to the First Imperial Guard Regiment in Tokyo
    Paul Nobuo Tatsuguchi (辰口 信夫, Tatsuguchi Nobuo), sometimes mistakenly referred to as Nebu Tatsuguchi (August 31, 1911 – May 30, 1943), was a Japanese soldier and surgeon who served in the Imperial Japanese Army (IJA) during World War II. He was killed during the Battle of Attu on Attu Island, Alaska, United States, on May 30, 1943. (Full article...)
  • Image 8 Robert Marshall (January 2, 1901 – November 11, 1939) was an American forester, writer and wilderness activist who is best remembered as the person who spearheaded the 1935 founding of the Wilderness Society in the United States. Marshall developed a love for the outdoors as a young child. He was an avid hiker and climber who visited the Adirondack Mountains frequently during his youth, ultimately becoming one of the first Adirondack Forty-Sixers. He also traveled to the Brooks Range of the far northern Alaskan wilderness. He wrote numerous articles and books about his travels, including the bestselling 1933 book Arctic Village. (Full article...)

    Robert Marshall (January 2, 1901 – November 11, 1939) was an American forester, writer and wilderness activist who is best remembered as the person who spearheaded the 1935 founding of the Wilderness Society in the United States. Marshall developed a love for the outdoors as a young child. He was an avid hiker and climber who visited the Adirondack Mountains frequently during his youth, ultimately becoming one of the first Adirondack Forty-Sixers. He also traveled to the Brooks Range of the far northern Alaskan wilderness. He wrote numerous articles and books about his travels, including the bestselling 1933 book Arctic Village. (Full article...)
  • Image 9 Comet Hyakutake photographed by Franz Haar in March 1996 Comet Hyakutake (formally designated C/1996 B2) is a comet discovered on 31 January 1996. It was dubbed the Great Comet of 1996; its passage to within 0.1 AU (15 Gm) of the Earth on 25 March was one of the closest cometary approaches of the previous 200 years. Reaching an apparent visual magnitude of zero and spanning nearly 80°, Hyakutake appeared very bright in the night sky and was widely seen around the world. The comet temporarily upstaged the much anticipated Comet Hale–Bopp, which was approaching the inner Solar System at the time. (Full article...)

    Comet Hyakutake photographed by Franz Haar in March 1996

    Comet Hyakutake (formally designated C/1996 B2) is a comet discovered on 31 January 1996. It was dubbed the Great Comet of 1996; its passage to within 0.1 AU (15 Gm) of the Earth on 25 March was one of the closest cometary approaches of the previous 200 years. Reaching an apparent visual magnitude of zero and spanning nearly 80°, Hyakutake appeared very bright in the night sky and was widely seen around the world. The comet temporarily upstaged the much anticipated Comet Hale–Bopp, which was approaching the inner Solar System at the time. (Full article...)
  • Image 10 Farne Islands The Arctic tern (Sterna paradisaea) is a tern in the family Laridae. This bird has a circumpolar breeding distribution covering the Arctic and sub-Arctic 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 70,900 km (44,100 mi) for birds nesting in Iceland and Greenland and about 48,700 km (30,300 mi) for birds nesting in the Netherlands. These are by far the longest migrations known in the animal kingdom. The Arctic tern nests once every one to three years (depending on its mating cycle). (Full article...)

    Farne Islands

    The Arctic tern (Sterna paradisaea) is a tern in the family Laridae. This bird has a circumpolar breeding distribution covering the Arctic and sub-Arctic 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 70,900 km (44,100 mi) for birds nesting in Iceland and Greenland and about 48,700 km (30,300 mi) for birds nesting in the Netherlands. These are by far the longest migrations known in the animal kingdom. The Arctic tern nests once every one to three years (depending on its mating cycle). (Full article...)
  • Image 11 In the Glen Davis, New South Wales, Australia. The willie wagtail (also spelt willy wagtail), scientific name Rhipidura leucophrys, is a passerine bird native to Australia, New Guinea, the Solomon Islands, the Bismarck Archipelago, and Eastern Indonesia. It is a common and familiar bird throughout much of its range, living in most habitats apart from thick forest. Measuring 19–21.5 cm (7+1⁄2–8+1⁄2 in) in length, the willie wagtail is contrastingly coloured with almost entirely black upperparts and white underparts; the male and female have similar plumage. (Full article...)

    In the Glen Davis, New South Wales, Australia.

    The willie wagtail (also spelt willy wagtail), scientific name Rhipidura leucophrys, is a passerine bird native to Australia, New Guinea, the Solomon Islands, the Bismarck Archipelago, and Eastern Indonesia. It is a common and familiar bird throughout much of its range, living in most habitats apart from thick forest. Measuring 19–21.5 cm (7+1⁄2–8+1⁄2 in) in length, the willie wagtail is contrastingly coloured with almost entirely black upperparts and white underparts; the male and female have similar plumage. (Full article...)
  • Image 12 Ronnie Lee Gardner (January 16, 1961 – June 18, 2010) was an American criminal who received the death penalty for killing a man during an attempted escape from a courthouse in 1985, and was executed by a firing squad by the state of Utah in 2010. His case spent nearly 25 years in the court system, prompting the Utah House of Representatives to introduce legislation to limit the number of appeals in capital cases. (Full article...)
    Ronnie Lee Gardner (January 16, 1961 – June 18, 2010) was an American criminal who received the death penalty for killing a man during an attempted escape from a courthouse in 1985, and was executed by a firing squad by the state of Utah in 2010. His case spent nearly 25 years in the court system, prompting the Utah House of Representatives to introduce legislation to limit the number of appeals in capital cases. (Full article...)
  • Image 13 The Northwest Exelon Pavilion is the Millennium Park Welcome Center and houses the park's office. The Exelon Pavilions are four buildings that generate electricity from solar energy and provide access to underground parking in Millennium Park in the Loop community area of Chicago in Cook County, Illinois, United States. The Northeast Exelon Pavilion and Northwest Exelon Pavilion (jointly the North Exelon Pavilions) are located on the northern edge of the park along Randolph Street, and flank the Harris Theater. The Southeast Exelon Pavilion and Southwest Exelon Pavilion (jointly the South Exelon Pavilions) are located on the southern edge of the park along Monroe Street, and flank the Lurie Garden. Together the pavilions generate 19,840 kilowatt-hours (71,400 MJ) of electricity annually, worth about $2,350 per year. (Full article...)

    The Northwest Exelon Pavilion is the Millennium Park Welcome Center and houses the park's office.

    The Exelon Pavilions are four buildings that generate electricity from solar energy and provide access to underground parking in Millennium Park in the Loop community area of Chicago in Cook County, Illinois, United States. The Northeast Exelon Pavilion and Northwest Exelon Pavilion (jointly the North Exelon Pavilions) are located on the northern edge of the park along Randolph Street, and flank the Harris Theater. The Southeast Exelon Pavilion and Southwest Exelon Pavilion (jointly the South Exelon Pavilions) are located on the southern edge of the park along Monroe Street, and flank the Lurie Garden. Together the pavilions generate 19,840 kilowatt-hours (71,400 MJ) of electricity annually, worth about $2,350 per year. (Full article...)
  • Image 14 Sanger in 1936 Margaret Sanger (/ˈsæŋər/; née Higgins; September 14, 1879 – September 6, 1966) was an American birth control activist, sex educator, writer, and nurse. She opened the first birth control clinic in the United States, founded Planned Parenthood, and was instrumental in the development of the first birth control pill. Sanger is regarded as a founder and leader of the birth control movement. (Full article...)

    Sanger in 1936

    Margaret Sanger (/ˈsæŋər/; née Higgins; September 14, 1879 – September 6, 1966) was an American birth control activist, sex educator, writer, and nurse. She opened the first birth control clinic in the United States, founded Planned Parenthood, and was instrumental in the development of the first birth control pill. Sanger is regarded as a founder and leader of the birth control movement. (Full article...)
  • Image 15 The Poitevin (French pronunciation: [pwat(ə)vɛ̃]) or Poitou is a French breed of draft horse. It is named for its area of origin, the former province of Poitou in west-central France, now a part of the region of Nouvelle-Aquitaine. It was formed in the seventeenth century when horses of Flemish or Dutch origin, brought to the area by engineers working to drain the Marais Poitevin, interbred with local horses. Although it has the size and conformation of a draft horse, the Poitevin has never been bred for draft abilities, and has been little used for draft work. Its principal traditional use was the production of mules. Poitevin mares were put to jacks of the large Baudet du Poitou breed of donkey; the resulting Poitevin mules were in demand for agricultural and other work in many parts of the world, including Russia and the United States. In the early twentieth century there were some 50,000 brood mares producing between 18,000 and 20,000 mules per year. (Full article...)

    The Poitevin (French pronunciation: [pwat(ə)vɛ̃]) or Poitou is a French breed of draft horse. It is named for its area of origin, the former province of Poitou in west-central France, now a part of the region of Nouvelle-Aquitaine. It was formed in the seventeenth century when horses of Flemish or Dutch origin, brought to the area by engineers working to drain the Marais Poitevin, interbred with local horses. Although it has the size and conformation of a draft horse, the Poitevin has never been bred for draft abilities, and has been little used for draft work. Its principal traditional use was the production of mules. Poitevin mares were put to jacks of the large Baudet du Poitou breed of donkey; the resulting Poitevin mules were in demand for agricultural and other work in many parts of the world, including Russia and the United States. In the early twentieth century there were some 50,000 brood mares producing between 18,000 and 20,000 mules per year. (Full article...)
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The Paranal Observatory of European Southern Observatory shooting a laser guide star to the Galactic Center

Astronomy is a natural science that studies celestial objects and the phenomena that occur in the cosmos. It uses mathematics, physics, and chemistry in order to explain their origin and their overall evolution. Objects of interest include planets, moons, stars, nebulae, galaxies, meteoroids, asteroids, and comets. Relevant phenomena include supernova explosions, gamma ray bursts, quasars, blazars, pulsars, and cosmic microwave background radiation. More generally, astronomy studies everything that originates beyond Earth's atmosphere. Cosmology is a branch of astronomy that studies the universe as a whole. (Full article...)

Did you know...

Did you know it about Science?
  • ... that Science Fiction Literature Through History: An Encyclopedia contains entries on topics not typically associated with science fiction, such as William Shakespeare and the Odyssey?
  • ... 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?
  • ... that Science Park station was built despite the objections of the operating agency?
  • ... that several science fiction critics praised "Rock Diver", the first short story by American writer Harry Harrison, for its compelling take on technology for passing through matter?
  • ... that Godwin Obasi has been described as "Africa's gift to the world of climate science"?
  • ... that Jill, Duchess of Hamilton, donated her body to science because "funerals are a bore"?

Get involved

For editor resources and to collaborate with other editors on improving Wikipedia's Science-related articles, visit WikiProject Science.
Science things you can do
Many naturally occurring phenomena approximate a normal distribution.
Many naturally occurring phenomena approximate a normal distribution.
  • Integrate relatively new scientific knowledge and findings (major studies reported on by RS) into relevant articles
  • Expand 2025 in science and/or other articles for science-related topics of the year (in the box on the right)
    • Create new articles for items of this article, mostly articles relating to new scientific fields/topics/findings (the page does not use redlinks anymore but you will quickly identify possible new articles when reading it; here you can find a version with over 60 redlinked examples)
    • Some of the lists' items have not yet been integrated into their wikilinked articles; if you add a study there it should also be relevant to at least one other article
    • Maybe this could be done as part of an organized effort
  • Find[how?] studies published under a compatible open license (like CC BY 4.0) and upload the studies' images with descriptions from the study and add these images to articles if they are relevant and useful there
    • When a study with a useful image is published under an incompatible or unclear license (or the image is published not in a study but elsewhere), you could contact its authors (Twitter/Mail) and ask them to give you the permission to upload them under CC BY 4.0 (or whether they could upload the image/s under a compatible license)
    • You can also think about whether images would be useful as you read a science-related article and then search for such images:
      • if they already exist add them (if already on WMCommons) or upload them (if the license is ok) or ask their authors for permissions
      • if they don't, you could create (or request) them

Science News

Further information: 2025 in science
16 April 2025 –
A colossal squid is filmed in the Southern Atlantic Ocean for the first time since the species was discovered in 1925. The 30 cm (12 in)-long juvenile was filmed by a team of scientists led by the University of Essex near the South Sandwich Islands at a depth of 600 m (2,000 ft). (BBC News)
14 April 2025 – Blue Origin NS-31
A Blue Origin New Shepard launch vehicle makes a brief sub-orbital spaceflight, carrying six female space tourists, marking the first all-female spacecraft since 1963's Vostok 6 which had Valentina Tereshkova as the pilot and the spacecraft's sole passenger. (NPR) (USA Today)
1 April 2025 – Private spaceflight
SpaceX successfully launches four humans into orbit over Earth’s poles for the first time for the human spaceflight mission Fram2. The journey will last three to five days. (The New York Times)
26 March 2025 –
Scientists discover Mongolian dinosaur Duonychus tsogtbaatari. (NBC News)
25 March 2025 –
A 6.7 magnitude earthquake hits New Zealand causing a tsunami warning to be issued. A tsunami was then spotted in Fiordland. [1]
7 March 2025 – Stand Up for Science 2025
Organized demonstrations and walkouts of scientists take place across 30 cities in the United States and France in protest of the Donald Trump administration's grant budget and employment cuts to several government scientific agencies. (AP)

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  1. ^ https://www.nzherald.co.nz/nz/67-southland-quake-struck-in-tsunami-prone-region-poorly-understood-by-scientists/MLZSBREMVZHXZNYS5B2QX2FKPI/
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