All articles starting with B
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Barycentric Dynamical Time
Barycentric Dynamical Time (TDB) is a coordinate time scale defined by the IAU as the time argument of solar-system ephemerides, kept close to Terrestrial Time at the geocenter.
Barychelidae
Barychelidae, brush-footed trapdoor spiders, a mygalomorph spider family (Simon, 1889) sister to tarantulas, with claw tufts, trapdoor burrows, a mainly Gondwanan distribution, and unstable limits versus Theraphosidae.
Baryogenesis
Baryogenesis is the hypothetical physical process in the early universe that generated a small excess of baryons over antibaryons, producing all the matter in today's cosmos.
Baryon
A baryon is a fermionic hadron with baryon number B = 1, composed of three valence quarks plus possible quark–antiquark pairs; protons and neutrons are the familiar examples, and pentaquarks are exotic five-quark cases.
Baryon acoustic oscillations
Baryon acoustic oscillations are large-scale patterns in galaxy clustering, left by sound waves in the early universe and used as a standard ruler to measure cosmic expansion.
Baryon asymmetry
Baryon asymmetry is the excess of matter over antimatter in the universe, quantified by the baryon-to-photon ratio and generated by baryogenesis in the early universe.
Baryon Oscillation Spectroscopic Survey
The Baryon Oscillation Spectroscopic Survey (BOSS) was a five-year Sloan Digital Sky Survey III survey, running 2009 to 2014, that mapped galaxies and quasars to measure cosmic expansion.
Baryonyx
Baryonyx walkeri, a 10-meter Early Cretaceous spinosaurid theropod from England, Spain, and Portugal, discovered in Surrey in 1983 from a 31 cm thumb claw; a fish-eater with crocodile-like jaws.
Barysaw
Barysaw (Барысаў, Borisov) is a city of about 140,000 in Minsk Region, Belarus, on the Berezina River 74 km northeast of Minsk; founded 1102, site of the 1812 Berezina crossing, with a Dfb climate.
Baryshevskiy Rayon
Baryshevskiy Rayon (Баришівський район) was a raion of Kyiv Oblast, Ukraine, centered on Baryshivka; formed 1923, hit by the Holodomor, occupied 1941–43, abolished in the 2020 reform into Brovary Raion.
Baryte
Baryte, also known as heavy spar, is a barium sulfate mineral with a high specific gravity of 4.5, used mainly as a weighting agent in oil-well drilling mud.
Barzakh
Barzakh (برزخ), Arabic for barrier or isthmus, is the Islamic intermediate state between death and resurrection, named from Qur'an 23:100; also Ibn 'Arabi's metaphysical Limit and a modern figure of liminality.
Barzakh (برزخ) (TV series)
Barzakh (برزخ) is a 2024 Pakistani Urdu-language fantasy drama web series written and directed by Asim Abbasi, starring Fawad Khan and Sanam Saeed, streaming on ZEE5; six episodes about a resort owner's wedding to a woman believed dead.
Barzan Gas Project
The Barzan Gas Project is a natural gas development in Qatar's offshore North Field, 93 percent owned by QatarEnergy, supplying gas for the domestic market.
Barzan Ibrahim al-Tikriti
Barzan Ibrahim al-Tikriti (برزان إبراهيم حسن التكريتي, 1951-2007), Saddam Hussein's half-brother, headed Iraq's Mukhabarat intelligence service 1979-1983, served as UN ambassador in Geneva managing Saddam's hidden finances, and was hanged in 2007 for the Dujail killings.
Bas (rapper)
Bas (Abbas Hamad, born 1987) is a Paris-born, Queens-raised Sudanese-American rapper on J. Cole's Dreamville label, known for Last Winter, Too High to Riot, Milky Way, "Tribe," and Sudan activism.
Bas de Bruin
Bas de Bruin is a Dutch organometallic chemist at the University of Amsterdam known for cobalt-catalyzed hydrogenation of carboxylic acids and radical-type metalloradical catalysis with base metals.
Bas Dost
Bas Dost (born 1989, Deventer) is a retired Dutch centre-forward, 1.96 m tall, Eredivisie top scorer 2011/12 (32 goals), Wolfsburg DFB-Pokal winner 2015, 93 goals for Sporting CP, 18 Netherlands caps, retired September 2025 after a 2023 cardiac arrest.
Bas Jan Ader
Bas Jan Ader (Bastiaan Johan Christiaan Ader, 1942–disappeared 1975), Dutch conceptual and performance artist in Los Angeles, known for the Fall films, I'm Too Sad to Tell You, and the unfinished In Search of the Miraculous, lost at sea crossing the Atlantic in 1975.
Bas Mooy
Bas Mooy, born in Rotterdam in 1976, is a Dutch techno producer and DJ active since 1999, known for a dark, industrial sound and for founding the Rotterdam label Mord.
Bas Ogooué
Bas Ogooué (lower Ogooué) is Gabon's largest Ramsar Site (no. 1851, designated 2009), a 1,370,000-ha alluvial wetland plain of the Ogooué River with flooded forest, threatened wildlife, and community-led fisheries management on Lake Oguemoué.
Bas Rutten
Bas Rutten (El Guapo), Dutch mixed martial artist born 1965 in Veldhoven; King of Pancrase 1995 and UFC heavyweight champion 1999; retired on a 22-fight win streak; UFC Hall of Fame Pioneer Era inductee 2015.
Bas Tera Saath Ho (بس تیرا ساتھ ہو)
Bas Tera Saath Ho (بس تیرا ساتھ ہو) is a 2026 Pakistani Urdu ARY Digital family drama starring Farhan Saeed as Anas and Sana Javed as Ansa, written by the late Saira Raza and directed by Qasim Ali Mureed, covering deepfake misuse, with reported peak ratings of 15.7.
Bas Uele
Bas Uele (Bas-Uélé) is one of the 26 provinces of the Democratic Republic of the Congo, located in the northeast with its capital at Buta.
Bas van de Goor
Bas van de Goor (Sebastiaan Jacques Henri van de Goor, born 1971) is a Dutch middle blocker, 1996 Olympic volleyball champion and two-time Olympic MVP, later founder of the Bas van de Goor Foundation for diabetes and sport.
Bas van Fraassen
Bas van Fraassen (born 1941, Goes, the Netherlands) is a Dutch-born American philosopher best known for constructive empiricism, introduced in The Scientific Image (1980), and work on quantum mechanics.
Bas van Steensel
Bas van Steensel is a Dutch molecular biologist who heads the Division of Gene Regulation at the Netherlands Cancer Institute and developed the DamID genome-mapping technique.
Bas-Congo Province
Bas-Congo Province, officially Kongo Central since 2015, is the westernmost province of the Democratic Republic of the Congo, stretching from Kinshasa to the Atlantic Ocean with capital Matadi.
Bas-Rhin
Bas-Rhin (code 67) is a French department in Grand Est, northeastern France, prefecture Strasbourg, 514 communes, 1,163,810 inhabitants (2023); since 2021 part of the Collectivité européenne d'Alsace with Haut-Rhin.
Bas-Saint-Laurent
Bas-Saint-Laurent, Quebec administrative region 01 on the south shore of the St. Lawrence estuary; about 205,000 residents over 22,183 km²; main cities Rimouski and Rivière-du-Loup; seven MRCs; economy of services, maritime, agri-food, forestry.