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An operating system (OS) is system software that manages computer hardware and software resources, and provides common services for computer programs....

Human spaceflight (also referred to as manned spaceflight or crewed spaceflight) is spaceflight with a crew or passengers aboard a spacecraft, often with...

A telephone exchange, also known as a telephone switch or central office, is a crucial component in the public switched telephone network (PSTN) or large...

Sputnik 1 (/ˈspʌtnɪk, ˈspʊtnɪk/, Russian: Спутник-1, Satellite 1) was the first artificial Earth satellite. It was launched into an elliptical low Earth...

The Free Software Foundation (FSF) is a 501(c)(3) non-profit organization founded by Richard Stallman on October 4, 1985, to support the free software...

In radio engineering, an antenna (American English) or aerial (British English) is the interface between radio waves propagating through space and electric...

Orion (Orion Multi-Purpose Crew Vehicle or Orion MPCV) is a partially reusable crewed spacecraft used in NASA's Artemis program. The spacecraft consists...

Tor is a free overlay network for enabling anonymous communication. Built on free and open-source software and more than seven thousand volunteer-operated...

An automatic transmission (sometimes abbreviated AT) is a multi-speed transmission used in motor vehicles that does not require any input from the driver...

Chang'e 4 (/tʃɑːŋˈə/; Chinese: 嫦娥四号; pinyin: Cháng'é Sìhào; lit. 'Chang'e No. 4') is a robotic spacecraft mission in the Chinese Lunar Exploration Program...

TotalEnergies SE is a French multinational integrated energy and petroleum company founded in 1924 and is one of the seven supermajor oil companies. Its...

A top-level domain (TLD) is one of the domains at the highest level in the hierarchical Domain Name System of the Internet after the root domain. The top-level...

Soyuz-2 (Russian: Союз-2, lit. 'Union-2') (GRAU index 14A14) is a modernised version of the Soviet Soyuz rocket. In its basic form, it is a three-stage...

Android One is a family of third-party Android smartphones promoted by Google. In comparison to many third-party Android devices, which ship with a manufacturer's...

PJSC Rosneft Oil Company (Russian: Роснефть, romanized: Rosneft', IPA: [ˌrosˈnʲeftʲ] stylized as ROSNEFT) is a Russian integrated energy company headquartered...

Philae (/ˈfaɪliː/ or /ˈfiːleɪ/) was a robotic European Space Agency lander that accompanied the Rosetta spacecraft until it separated to land on comet...

A bucket is typically a watertight, vertical cylinder or truncated cone or square, with an open top and a flat bottom, attached to a semicircular carrying...

Polyurethane (/ˌpɒliˈjʊərəˌθeɪn, -jʊəˈrɛθeɪn/; often abbreviated PUR and PU) refers to a class of polymers composed of organic units joined by carbamate...

Animals in space originally served to test the survivability of spaceflight, before human spaceflights were attempted. Later, many species were flown to...

Energy laws govern the use and taxation of energy, both renewable and non-renewable. These laws are the primary authorities (such as caselaw, statutes...