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Satellite navigation
Satellite navigation, or sat nav, determines position, velocity, and time on Earth by timing radio signals from satellite constellations, the four global systems being GPS, GLONASS, Galileo, and BeiDou.
Satellite phone
A satellite phone, also called a satphone, is a mobile telephone connecting directly to orbiting satellites, enabling calls and texts from remote areas beyond all cellular coverage.
Satellite quantum key distribution
Satellite quantum key distribution (SatQKD) uses quantum signals sent over free-space optical links between satellites and ground stations to generate secret encryption keys, with eavesdropping detectable by quantum mechanics.
Satellite spectrum and orbital-slot coordination
Satellite spectrum and orbital-slot coordination is the international ITU system by which satellite operators obtain rights to frequencies and orbital positions through filing and coordination.
Satellite spectrum and orbital-slot regulation
Satellite spectrum and orbital-slot regulation is the international system, administered by the International Telecommunication Union, through which satellite frequencies and orbital positions are filed, coordinated, and recorded to prevent interference.
Satellite television
Satellite television, also called satellite TV or direct-to-home TV, delivers programming through communications satellites received by home dish antennas or earth stations feeding cable networks.
Satellite television in the United States
Satellite television in the United States is the delivery of TV programming to American homes and businesses by geostationary satellites, which grew into cable's principal competitor.
Satellite-derived irradiance
Satellite-derived irradiance is the estimation of surface solar irradiance from satellite imagery rather than ground instruments, the principal method for mapping irradiance globally since the 1960s.
SATENA Flight 8849
SATENA Flight 8849 was a Colombian domestic flight from Cúcuta to Ocaña whose Beechcraft 1900D crashed into a mountainside in January 2026, killing all 15 aboard.
Sather
Sather is a non-proprietary object-oriented programming language developed at ICSI in Berkeley from 1990, based on Eiffel, compiling to C code that performs nearly as fast as hand-written C.
Satisfyer
Satisfyer is a German sexual wellness brand based in Bielefeld, best known for the Satisfyer Pro 2 clitoral stimulator launched in 2016 using its patented Air-Pulse technology.
Satish Dhawan (ਸਤੀਸ਼ ਧਵਨ)
Satish Dhawan (ਸਤੀਸ਼ ਧਵਨ) was an Indian aerospace engineer and fluid dynamicist who led the Indian space program as ISRO chairman from 1972 to 1984.
Satish Dhawan Space Centre
Satish Dhawan Space Centre, also known as SHAR (Sriharikota Range), is India's spaceport on Sriharikota island, Andhra Pradesh, and ISRO's launch base, operational since 1971.
SATO (company)
SATO Corporation is a Japanese automatic identification company headquartered in Tokyo, founded in 1940, known for Japan's first hand labeler and the world's first thermal transfer barcode printer.
SATORP (refinery)
SATORP, the Saudi Aramco Total Refining and Petrochemical Company, is a joint venture of Saudi Aramco and TotalEnergies in Jubail, Saudi Arabia, refining Arabian Heavy crude since 2014.
Satoshi
A satoshi is the smallest unit of the cryptocurrency bitcoin, equal to 0.00000001 BTC; one bitcoin contains 100 million satoshis, and the unit honors Bitcoin's creator, Satoshi Nakamoto.
Satoshi Okabe
Satoshi Okabe (岡部 聡) is a Japanese environmental microbiologist and water-quality engineer, a professor at Hokkaido University since 2008 known for research on anammox bacteria, biofilms, and wastewater treatment.
Satoshi Tajiri (田尻智)
Satoshi Tajiri (田尻智), born in 1965 near Tokyo, is a Japanese video game designer who created the Pokémon franchise and founded Game Freak, which develops the main Pokémon games.
Satpura Thermal Power Station
The Satpura Thermal Power Station is a coal-fired power station at Sarni in Betul district, Madhya Pradesh, India, owned and operated by M.P. Power Generating Company Limited.
Satsuma reverberatory furnace
The Satsuma reverberatory furnace (反射炉) is a Western-style metal-melting furnace built by the Satsuma domain at Iso, Kagoshima, in the 1850s to cast iron cannons for coastal defense.
Satsuma Technology PLC
Satsuma Technology PLC, formerly Streaks Gaming PLC, was a London Stock Exchange-listed company that combined Bittensor AI infrastructure with a Bitcoin treasury strategy before shareholders voted to wind it up in 2026.
Satu FLNG Terminal
PFLNG Satu, PETRONAS Floating LNG Satu, is Malaysia's first floating LNG facility and the world's first in operation, achieving first gas at Kanowit off Sarawak in 2016.
Satun Oil and Gas Field
Satun Oil and Gas Field (Thai: สตูล) is an offshore gas and condensate field in Thailand's Gulf of Thailand, discovered in 1980 and operated by PTTEP.
Saturable reactor
A saturable reactor is a magnetic device, an inductor whose impedance a DC control winding sets by driving the core into or out of saturation, used in magnetic amplifiers.
Saturation diving
Saturation diving is a technique where divers live under pressure until their tissues saturate with inert gas, so decompression is taken once after days of deep work.
Saturation flow rate
Saturation flow rate is the equivalent hourly rate, in vehicles per hour per lane, at which queued vehicles traverse a signalized intersection approach assuming constant green.
Saturday night special
The Saturday night special is a term for a small, cheap, usually small-caliber handgun, a catch-all term rather than a specific make or model.
Saturn AL-31
The Saturn AL-31, originally Lyulka, is a Soviet and Russian afterburning turbofan engine family developed by the Lyulka-Saturn design bureau for the Sukhoi Su-27, first flown in 1981.
Saturn Corporation
Saturn Corporation, later Saturn LLC, was an American car manufacturer and brand created by General Motors in 1985, headquartered in Spring Hill, Tennessee, and wound down in 2010.
Saturn I
Saturn I, also known as Saturn C-1, was the first large American launch vehicle, a two-stage NASA rocket whose ten flights from 1961 to 1965 all succeeded.