All articles starting with G
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Galactic Empire (Star Wars)
Galactic Empire (Star Wars): Palpatine's tyrannical regime founded from the Galactic Republic via Order 66, ruled by stormtroopers and the Death Star, fell at Endor, succeeded by the First Order.
Galactic Energy (星河动力)
Galactic Energy (星河动力) is a Beijing-based private aerospace company flying the solid-propellant Ceres-1 and the reusable liquid-fueled Pallas-1, which reached orbit on its first flight in 2026.
Galactic fountain
A galactic fountain is the circulation of interstellar gas in a spiral galaxy in which supernova-heated gas rises into the halo, cools, and falls back.
Galactic halo
A galactic halo, or galaxy halo, is the roughly spherical component surrounding a galaxy's visible disk and bulge, dominated by dark matter and containing old, metal-poor stars.
Galactic plane
The galactic plane is the plane containing most of the disk of the Milky Way Galaxy, appearing in the sky as the luminous band of the Milky Way.
Galactic Republic
The Galactic Republic is the fictional democratic union in Star Wars, also called the Old Republic, governed by the Galactic Senate and Supreme Chancellor with Jedi peacekeepers, lasting over a thousand years until Palpatine's Empire.
Galactic tide
A galactic tide is the differential gravitational field of a galaxy, which torques distant Oort cloud comets and sends long-period comets into the inner Solar System.
Galactic warp
A galactic warp is a bending of a spiral galaxy's disk out of its own midplane, and the Milky Way's outer disk shows such a warp.
Galactica
Galactica was a large language model for science developed by Meta AI, released in November 2022 and withdrawn after three days of criticism over confident fabrications and invented citations.
Galactica 1980
Galactica 1980, also called Battlestar Galactica 1980, is the 10-episode 1980 ABC spin-off of the 1978 Battlestar Galactica, in which the fleet reaches a technologically backward Earth; it flopped, with only The Return of Starbuck praised.
Galácticos
Galácticos: Real Madrid's superstar recruitment policy under Florentino Pérez, launched with Figo (€62m, 2000) and Zidane (€77.5m, 2001); commercial triumph, sporting decline after 2003, revived from 2009.
Galacto-oligosaccharides
Galacto-oligosaccharides (GOS), also called transgalacto-oligosaccharides, are prebiotic β-linked galactose chains made from lactose by β-galactosidase, used in infant formula and foods.
Galactokinase deficiency
Galactokinase deficiency (GALK, galactosemia type II, OMIM 230200) is an autosomal recessive GALK1 enzyme defect causing galactitol-driven infantile cataract, sometimes pseudotumor cerebri, treated with a lifelong galactose-restricted diet.
Galactorrhea (γαλακτόρροια)
Galactorrhea (γαλακτόρροια), non-lactational breast milk production, affects about 20-25% of women; usually from medication-induced hyperprolactinemia or prolactinomas, treated with cabergoline.
Galactorrhoea
Galactorrhoea, also spelled galactorrhea, is milky nipple discharge unrelated to childbirth or nursing. It is a clinical sign rather than a disease, often caused by high prolactin from medications or pituit tumors.
Galactose
Galactose is a monosaccharide sugar and the C-4 epimer of glucose, found mainly in lactose in milk and metabolized by the Leloir pathway, whose enzyme deficiencies cause galactosemia.
Galactose epimerase deficiency
Galactose epimerase deficiency (GALE deficiency, galactosemia type III, OMIM 230350) is an autosomal recessive disorder of the GALE gene (1p36) with generalized, intermediate, and peripheral forms, treated by galactose-restricted diet.
Galactose mutarotase deficiency
Galactose mutarotase deficiency, or GALM deficiency, type IV galactosemia, is a rare autosomal recessive disorder of galactose metabolism caused by GALM gene variants, first defined in 2019 in Japan, causing neonatal galactosemia and cataracts.
Galactose-binding lectin
Galactose-binding lectin: carbohydrate-binding proteins recognizing galactose or GalNAc, chiefly animal galectins (formerly S-type lectins), galactose-type C-type lectins, bacterial PA-IL, and plant lectins like peanut agglutinin, with weak micromolar-millimolar single-site binding boosted by oligomer clustering.
Galactosemia
Galactosemia: inherited disorders of galactose metabolism (types I-IV; GALT, GALK1, GALE, GALM deficiency). Classic type I affects 1 in 30,000-60,000 newborns, treated with lifelong galactose-restricted diet; gene therapy JAG101 in development.
Galactosialidosis
Galactosialidosis (Goldberg syndrome) is an autosomal recessive lysosomal storage disease caused by CTSA variants, causing combined beta-galactosidase and neuraminidase deficiency, in early infantile, late infantile, and juvenile/adult forms.
Galacturonic acid
Galacturonic acid (GalA) is a sugar acid derived from galactose by oxidation of its terminal alcohol, best known as the principal building block of pectin in plant cell walls.
Galactus
Galactus (Galan), Marvel Comics' Devourer of Worlds, created by Stan Lee and Jack Kirby, debuting in Fantastic Four #48 (1966); a pre-Big Bang survivor wielding the Power Cosmic, served by Heralds like the Silver Surfer and voiced by Ralph Ineson in the 2025 MCU film.
Galadriel
Galadriel is Tolkien's Elven Lady of Lothlórien, keeper of Nenya, who refuses the One Ring in The Lord of the Rings. Also called Artanis; created late, with inconsistent backstory; portrayed by Blanchett and Clark.
Galadriel Stineman
Galadriel Stineman (Margaret Elizabeth Galadriel Stineman, born 1990, Kentucky) is an American actress known as Gwen Tennyson in Ben 10: Alien Swarm, Cassidy Finch on The Middle, and the voice and face of Ashley in Until Dawn; also a producer, author, and acting coach.
Galaesus (crater on Dione)
Galaesus is a 79-km-diameter IAU-approved impact crater on Saturn's moon Dione, centered at 46.77°N, 296.25°W, named after a figure from Virgil's Aeneid, approved February 25, 2011.
Galaga
Galaga (ギャラガ) is Namco's 1981 fixed-screen arcade shooter, successor to Galaxian, designed by Shigeru Yokoyama. Known for the Boss Galaga tractor-beam capture, Dual Fighter mode, and Challenging Stages; sixth top earner in Japan in 1981.
Galago
Galago (lesser galagos, bushbabies, nagapies) is a genus of small nocturnal African strepsirrhine primates in Galagidae, with four confirmed species, 30-40 cm long, 95-300 g, feeding on acacia gum and insects.
Galago senegalensis
Galago senegalensis, the Senegal galago or northern lesser galago/bushbaby, is a small nocturnal African primate of family Galagidae, ranging over 7,000 km from Senegal to Somalia, with four subspecies and IUCN Least Concern status.
Galah
Galah (Eolophus roseicapilla), also called pink and grey or rose-breasted cockatoo, an abundant Australian pink-and-grey cockatoo of family Cacatuidae, 35–36 cm, IUCN Least Concern with increasing population, found across most of Australia.