G-Power is a German car tuning manufacturer based in Autenzell, Bavaria. Founded in 1983 by Jochen Grommisch, the company specialises in tuning BMW cars and manufacturing boutique vehicles. It was integrated into the ASA Group in 2008. Its supercharged 5.0L V-10 830 hp BMW M5 Hurricane RR reached 372 km/h (231 mph)

The gada (Sanskrit: गदा gadā, Tamil: gadai, Malay: gedak, Old Tagalog: batuta) is a club or blunt mace from the Indian subcontinent. Made either of wood or metal, it consists essentially of a spherical head mounted on a shaft, with a spike on the top. Outside India, the gada was also adopted in Southeast Asia, where it is still used in silat. The gada is the main weapon of the Hindu God Hanuman. Known for his strength, Hanuman is traditionally worshipped by wrestlers in the Indian subcontinent and Southeast Asia. Vishnu also carries a gada named Kaumodaki in one of his four hands. In the Mahabharata epic, the fighters Bhima, Duryodhana, Jarasandha and others were said to be masters of the gada.

Gadolinium is a chemical element with symbol Gd and atomic number 64. Gadolinium is a silvery-white, malleable, and ductile rare earth metal. It is found in nature only in oxidized form, and even when separated, it usually has impurities of the other rare earths. Gadolinium was discovered in 1880 by Jean Charles de Marignac, who detected its oxide by using spectroscopy. It is named after the mineral gadolinite, which is one of the minerals in which gadolinium is found, itself named for the chemist Johan Gadolin. Pure gadolinium was first isolated by the chemist Paul Emile Lecoq de Boisbaudran in about 1886. Gadolinium possesses unusual metallurgical properties, to the extent that as little as 1.0 percent of gadolinium can significantly improve the workability and resistance to oxidation at high temperatures of iron, chromium, and related metals. Gadolinium as a metal or a salt absorbs neutrons, and it is, therefore, used sometimes for shielding in neutron radiography, and also in nuclear reactors. Like most of the rare earths, gadolinium forms trivalent ions with fluorescent properties, and salts of gadolinium(III) are used as phosphors in various applications. The kinds of gadolinium(III) ions occurring in water-soluble salts are toxic to mammals. However, chelated gadolinium(III) compounds are far less toxic because they carry gadolinium(III) through the kidneys, and out of the body, before the free ion can be released into the tissues. Because of its paramagnetic properties, solutions of chelated organic gadolinium complexes are used as intravenously administered gadolinium-based MRI contrast agents in medical magnetic resonance imaging.

GAF is a company based in Parsippany, New Jersey, that has roots dating back to the late 19th century. The GAF acronym stands for General Aniline & Film. The company has historically been primarily focused on manufacturing of roofing materials for residential and commercial applications. At one time GAF was also active in manufacturing photographic film as well as cameras and projectors (both still and motion picture), and was the manufacturer of the View-Master, the famous line of 3D transparencies, viewers and projectors. Briefly in the 1970s, it was the official film of Disneyland and Walt Disney World, and at this time, actor Henry Fonda served as the company's spokesman in several television commercials including one that featured Jodie Foster in her first acting role. Jim Schnepper is the President of GAF, an operating subsidiary of Standard Industries.

Gaggenau Hausgeräte (en: Gaggenau Home Appliances) is a German manufacturer of high-end home appliances. The company won at the 2008 IF Design Awards in every category in which it had nominations.

On a vehicle, a gaiter or boot refers to a protective flexible sleeve covering a moving part, intended to keep the part clean.

The Galactic Center, or Galactic Centre, is the rotational center of the Milky Way. It is 8,122 ± 31 parsecs (26,490 ± 100 ly) away from Earth in the direction of the constellations Sagittarius, Ophiuchus, and Scorpius where the Milky Way appears brightest. It coincides with the compact radio source Sagittarius A*. There are around 10 million stars within one parsec of the Galactic Center, dominated by red giants, with a significant population of massive supergiants and Wolf-Rayet stars from a star formation event around one million years ago, and one supermassive black hole of 4.100 ± 0.034 million solar masses at the Galactic Center, which powers the Sagittarius A* radio source.

The surname Galanter may refer to: Eugene Galanter, academic and psychologist Marc Galanter, legal scholar Marc Galanter, MD, psychiatrist Mareva Galanter, French actress Neil Galanter, pianist Ruth Galanter, Californian politician Yale Galanter, US attorney

A galaxy is a gravitationally bound system of stars, stellar remnants, interstellar gas, dust, and dark matter. The word galaxy is derived from the Greek galaxias (γαλαξίας), literally "milky", a reference to the Milky Way. Galaxies range in size from dwarfs with just a few hundred million (108) stars to giants with one hundred trillion (1014) stars, each orbiting its galaxy's center of mass. Galaxies are categorized according to their visual morphology as elliptical, spiral, or irregular. Many galaxies are thought to have supermassive black holes at their centers. The Milky Way's central black hole, known as Sagittarius A*, has a mass four million times greater than the Sun. As of March 2016, GN-z11 is the oldest and most distant observed galaxy with a comoving distance of 32 billion light-years from Earth, and observed as it existed just 400 million years after the Big Bang. Research released in 2016 revised the number of galaxies in the observable universe from a previous estimate of 200 billion (2×1011) to a suggested 2 trillion (2×1012) or more, containing more stars than all the grains of sand on planet Earth. Most of the galaxies are 1,000 to 100,000 parsecs in diameter (approximately 3000 to 300,000 light years) and separated by distances on the order of millions of parsecs (or megaparsecs). For comparison, the Milky Way has a diameter of at least 30,000 parsecs (100,000 ly) and is separated from the Andromeda Galaxy, its nearest large neighbor, by 780,000 parsecs (2.5 million ly.) The space between galaxies is filled with a tenuous gas (the intergalactic medium) having an average density of less than one atom per cubic meter. The majority of galaxies are gravitationally organized into groups, clusters, and superclusters. The Milky Way is part of the Local Group, which is dominated by it and the Andromeda Galaxy and is part of the Virgo Supercluster. At the largest scale, these associations are generally arranged into sheets and filaments surrounded by immense voids. The largest structure of galaxies yet recognised is a cluster of superclusters that has been named Laniakea, which contains the Virgo supercluster.

A galea was a Roman soldier's helmet. Some gladiators, myrmillones, also wore a bronze galea with a face mask and a decoration, often a fish on its crest. The exact form or design of the helmet varied significantly over time, between differing unit types, and also between individual examples - pre-industrial production was by hand – so it is not certain to what degree there was any standardization even under the Roman Empire. Originally, Roman helmets were influenced by the neighboring Etruscans, people who utilised the "Nasua" type helmets. The Greeks in the south also influenced Roman design in the early history of Rome. For instance, the ancestor of the Chalcidian helmet, the Attic helmet, was widely used by officers until the end of the empire. Lastly, the Gauls were the peoples who most impacted the design of the Roman helmet hence the popular "Imperial Gallic" type helmets. In addition to this, it is commonly thought that the Gauls also introduced chainmail to the Romans. The primary evidence is scattered archaeological finds, which are often damaged or incomplete. There are similarities of form and function between them.