All articles starting with G

GJK

GJK, or Gilbert–Johnson–Keerthi, is a 1988 algorithm that computes the distance between two convex sets and determines whether they intersect, widely used in physics engines.

Gjøa oil and gas field

Gjøa is a Norwegian oil and gas field in the northern North Sea, about 50 km northeast of Troll, producing since 2010 from a semi-submersible platform operated by Vår Energi.

Oct 20, 2026

Gjöa Rupes (Gjoa Rupes) is a 237.9 km lobate scarp on Mercury at 66.89°S, 158.50°W, named in 1976 for Amundsen's ship through the Northwest Passage and formed by thrust faulting from global contraction.

Gjon Buzuku

Gjon Buzuku was a sixteenth-century northern Albanian Catholic priest, author and translator of Meshari, the first known book written in Albanian, completed January 5, 1555.

Gjon Gazulli

Gjon Gazulli is the name of two notable Albanians: a 15th-century Dominican astronomer and diplomat of Ragusa, and a priest martyred in 1927 and beatified in 2024.

Gjon Kastrioti

Gjon Kastrioti was an Albanian lord who ruled the Mat region and Dibra, attested from 1407, best known as the father of the resistance leader Skanderbeg.

GK Barry

GK Barry, real name Grace Eleanor Keeling (born 1999), is a British TikTok creator, Saving Grace podcaster, and TV presenter; broke through on Loose Women, I'm a Celebrity, and Radio 1.

GK Persei

GK Persei, or Nova Persei 1901, is a cataclysmic variable star in Perseus that erupted as a bright nova in 1901 and now shows dwarf nova outbursts.

Sep 19, 2026

GKK Group of Companies

The GKK Group of Companies is a Kampala-based Ugandan business group run under the name of its founder and chairman, Godfrey Kalule Kirumira, with interests in petroleum, real estate, and hospitality.

GKM (Mannheim) power station

GKM (Mannheim) power station, also known as Großkraftwerk Mannheim or Mannheim-Neckarau power station, is a hard coal-fired combined heat and power plant in Mannheim, Germany, with a capacity of about 2,147 MW.

GKM-001

GKM-001 is a liver-selective glucokinase activator for type 2 diabetes, discovered by Advinus Therapeutics (India) and later held by Impetis Biosciences; it lowers glucose without raising insulin or causing hypoglycemia.

GKN

GKN, short for Guest, Keen and Nettlefolds, is a British engineering brand formed in 1902, once Britain's largest steel producer and now an automotive and aerospace supplier.

GKN Aerospace

GKN Aerospace is a British aerospace supplier of engine systems, aerostructures, and transparencies, headquartered in Birmingham, England, whose technology is on board 90% of aircraft made today.

GKP error correction in trapped ions

GKP error correction in trapped ions is the experimental implementation of the Gottesman–Kitaev–Preskill code, which encodes a logical qubit in a single ion's motion; it was first realized at ETH Zurich in 2019.

GKP qubit

A GKP qubit is a logical qubit encoded in a harmonic oscillator using the Gottesman–Kitaev–Preskill code, proposed in 2001 to correct small shifts in position and momentum.

GKS Katowice

GKS Katowice (Górniczy Klub Sportowy Katowice, GieKSa) is a Polish multi-section sports club founded 27 February 1964 in Katowice, gold-green-black colors, known for men's football (Ekstraklasa since 2024), women's football (Polish champions 2023, 2025), and ice hockey (8 Polish titles).

Gl 49

Gl 49 (BD+61 195, GJ 49) is an M1.5 V red dwarf about 32 light-years away in Cassiopeia, in a wide binary with Gl 51, hosting the 2019-discovered super-Earth Gl 49 b (5.63 Earth masses, 13.85-day eccentric orbit).

Gl 686

Gl 686 (GJ 686, BD+18 3421, HIP 86287) is a nearby M1 red dwarf 8.16 pc away in Hercules hosting Gl 686 b, a confirmed super-Earth of 6.6-7.1 Earth masses in a 15.53-day, 0.091 AU radial-velocity orbit.

Sep 19, 2026

GL Capital Group

GL Capital Group is a Beijing-based private equity firm focused on buyout and growth investments in China's healthcare industry, founded in 2010 by Jeffrey Li, former Country President of Novartis China.

Gla (Greece)

Gla (Γλα, Glas, Kastro) is the largest Mycenaean citadel, a 20-hectare fortified outcrop in the Kopais basin, Boeotia, tied to the Mycenaean lake drainage works and abandoned around 1200 BC.

GLAAD

GLAAD (Gay and Lesbian Alliance Against Defamation) is a 501(c)(3) LGBTQ media advocacy organization founded in New York in 1985, known for the GLAAD Media Awards and the Where We Are on TV and Studio Responsibility Index reports.

Glacial erosion

Glacial erosion is the removal and transport of bedrock and sediment by glaciers, accomplished mainly through quarrying, abrasion, and subglacial meltwater, carving cirques, U-shaped valleys, and fjords.

Glacial erratic

A glacial erratic, or erratic block, is a rock fragment carried by glacial ice and deposited far from its source, usually resting on bedrock of a different type.

Glacial lake outburst flood

A glacial lake outburst flood (GLOF) is the sudden release of water dammed by glacier ice, moraine, or an ice jam, flooding valleys tens to hundreds of kilometers downstream.

Glacial lakes - Czechia

A long-term ecological research site covering eight glacial lakes of the Bohemian Forest, five in Czechia and three in Germany, monitored since 1871 for acidification and recovery.

Glacial landform

Glacial landforms are surface features created by glacier ice through erosion during advances and deposition during retreat, including cirques, U-shaped valleys, moraines, drumlins, eskers, and sandur, studied within glacial geomorphology.

Glacial period

A glacial period, also called a glaciation, is a colder interval within an ice age when continental ice sheets expand; the most recent ended about 11,500 years ago.

Glacier

A glacier, also called a gletscher, is a perennial mass of ice formed on land by compacted snow that moves slowly downslope under gravity, covering nearly a third of Earth's land during the Pleistocene Ice Age.

Glacier Bay National Park and Preserve

Glacier Bay National Park and Preserve, Alaska: 3.28-million-acre NPS unit, monument 1925, park and preserve 1980, famed for the world's most dramatic documented glacial retreat, 1,059 glaciers, and UNESCO World Heritage status.