{"https://codexery.com/uav-manufacturers/e/uav-manufacturers/lockheed-martin/": {"t": "Lockheed Martin", "s": "Top U.S. federal contractor since at least 2008."}, "https://codexery.com/corporations/e/corporations/northrop-grumman/": {"t": "Northrop Grumman", "s": "American aerospace and defense contractor formed by 1994 merger.", "i": "https://codexery.com/corporations/img/corporations/northrop-grumman.webp", "c": "Clearfieldcity · CC BY-SA 3.0"}, "https://codexery.com/orbits-and-celestial-mechanics/e/orbits-and-celestial-mechanics/geosynchronous-orbit/": {"t": "Geosynchronous orbit", "s": "An Earth orbit synchronized with the planet's rotation.", "i": "https://codexery.com/orbits-and-celestial-mechanics/img/orbits-and-celestial-mechanics/geosynchronous-orbit.webp", "c": "MikeRun · CC BY-SA 4.0"}, "/e/military-space-program-of-the-united-states/milstar/": {"t": "Milstar", "s": "Secure, jam-resistant military communications in geosynchronous orbit."}, "https://codexery.com/orbits-and-celestial-mechanics/e/orbits-and-celestial-mechanics/geostationary-orbit/": {"t": "Geostationary orbit", "s": "A fixed point in the sky for global communications and observation.", "i": "https://codexery.com/orbits-and-celestial-mechanics/img/orbits-and-celestial-mechanics/geostationary-orbit.webp", "c": "NOAA · Public domain"}, "https://codexery.com/meteorology/e/meteorology/hertz/": {"t": "Hertz", "s": "German physicist who proved electromagnetic waves exist."}, "https://codexery.com/radio-spectrum/e/radio-spectrum/extremely-high-frequency/": {"t": "Extremely high frequency", "s": "Millimeter waves enable dense frequency reuse and 5G networks.", "i": "https://codexery.com/radio-spectrum/img/radio-spectrum/extremely-high-frequency.webp", "c": "U.S. Army 1-SB by Staff Sgt. Nicholas Goodman · Public domain"}, "https://codexery.com/radio-spectrum/e/radio-spectrum/super-high-frequency/": {"t": "Super high frequency", "s": "SHF enables narrow-beam microwave communication and radar from 3 to 30 GHz."}, "https://codexery.com/planets-and-dwarf-planets/e/planets-and-dwarf-planets/earth/": {"t": "Earth", "s": "The only known planet with liquid surface water and life."}, "https://codexery.com/radio-modulation-modes/e/radio-modulation-modes/frequency-hopping-spread-spectrum/": {"t": "Frequency-hopping spread spectrum", "s": "A method of rapidly switching carrier frequencies to resist interference and eavesdropping."}, "https://codexery.com/antenna-types/e/antenna-types/phased-array/": {"t": "Phased array", "s": "An antenna array that steers radio beams electronically without moving parts."}, "https://codexery.com/radio-propagation/e/radio-propagation/radiation-pattern/": {"t": "Radiation pattern", "s": "Radiation pattern describes directional dependence of an antenna's emitted field strength."}, "https://codexery.com/lines-hemispheres/e/lines-and-hemispheres/latitude/": {"t": "Latitude", "s": "Latitude specifies north-south position on Earth or celestial bodies.", "i": "https://codexery.com/lines-hemispheres/img/lines-and-hemispheres/latitude.webp", "c": "source: Pearson Scott Foresman, donated to the Wikimedia Foundation\nsvg conversion: Gregors\nColor: Jahobr · via Wikipedia: Latitude · Public domain"}, "https://codexery.com/lines-hemispheres/e/lines-and-hemispheres/equator/": {"t": "Equator", "s": "Imaginary line dividing Earth into Northern and Southern Hemispheres."}, "https://codexery.com/military-and-two-way-radios/e/military-and-two-way-radios/smart-t/": {"t": "SMART-T", "s": "Protected beyond-line-of-sight satellite communications terminal for U.S. forces."}, "https://codexery.com/radio-manufacturers/e/radio-manufacturers/rockwell-collins/": {"t": "Rockwell Collins", "s": "Avionics and communications supplier from Collins Radio to 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"The Challenger disaster", "s": "A colliery spoil tip collapsed onto a Welsh village, killing 116 children and 28 adults."}, "https://codexery.com/disasters/e/historic-disasters/the-columbia-disaster/": {"t": "The Columbia disaster", "s": "Second Space Shuttle disaster, caused by foam strike on wing."}, "https://codexery.com/crewed-spacecraft-and-space-stations/e/crewed-spacecraft-and-space-stations/tiangong-1/": {"t": "Tiangong-1", "s": "China's first prototype space station and docking testbed."}, "https://codexery.com/space-shuttle-program/e/space-shuttle-program/kennedy-space-center-launch-complex-39/": {"t": "Kennedy Space Center Launch Complex 39", "s": "Historic Moonport turned Space Shuttle and Artemis launch site."}, "https://codexery.com/aircraft-components/e/aircraft-components/airframe/": {"t": "Airframe", "s": "The mechanical structure of an aircraft, excluding propulsion.", "i": "https://codexery.com/aircraft-components/img/aircraft-components/airframe.webp", "c": "San Diego Air & Space Museum Archives · Public domain"}, "https://codexery.com/crewed-spacecraft-and-space-stations/e/crewed-spacecraft-and-space-stations/boeing-starliner/": {"t": "Boeing Starliner", "s": "Boeing's reusable crew capsule for NASA's Commercial Crew Program."}, "https://codexery.com/space-missions/e/space-missions/the-international-space-station/": {"t": "The International Space Station", "s": "The International Space Station (ISS) is a modular spacecraft in low Earth orbit, assembled and operated by five partner agencies: NASA, Roscosmos, ESA, JAXA, a"}, "https://codexery.com/fifa-world-cup/e/honours/soviet-union/": {"t": "Soviet Union", "s": "The world's flagship communist state and a superpower spanning Eurasia."}, "https://codexery.com/astronomy-space/e/astronomy-and-space/low-earth-orbit/": {"t": "Low Earth orbit", "s": "Low Earth orbit hosts most artificial satellites and space stations."}, "https://codexery.com/amateur-astronomy/e/amateur-astronomy/amateur-astronomy/": {"t": "Amateur astronomy", "s": "Amateur astronomers observe celestial objects for passion, education, and citizen science."}, "/e/military-space-program-of-the-united-states/advanced-extremely-high-frequency/": {"t": "Advanced Extremely High Frequency", "s": "Secure, jam-resistant military communications satellite constellation."}, "https://codexery.com/apollo-program/e/apollo-program/kennedy-space-center-launch-complex-39a/": {"t": "Kennedy Space Center Launch Complex 39A", "s": "Historic launch pad for Apollo, Shuttle, and now SpaceX missions."}, "https://codexery.com/amateur-radio-satellites/e/amateur-radio-satellites/falconsat/": {"t": "FalconSAT", "s": "Cadet-built satellites for low-cost space research and training."}, "https://codexery.com/crewed-spacecraft-and-space-stations/e/crewed-spacecraft-and-space-stations/crew-dragon/": {"t": "Crew Dragon", "s": "SpaceX's reusable capsule for crew transport to orbit."}, "/e/military-space-program-of-the-united-states/boeing-x-37/": {"t": "Boeing X-37", "s": "Reusable robotic spaceplane for orbital technology demonstrations."}, "https://codexery.com/u-s-states/e/u-s-states/new-mexico/": {"t": "New Mexico", "s": "Land of diverse cultures, history, and high desert."}, "https://codexery.com/transportation/e/transportation/helicopter/": {"t": "Helicopter", "s": "A rotorcraft achieving vertical flight via horizontally spinning rotors."}, "https://codexery.com/crewed-spacecraft-and-space-stations/e/crewed-spacecraft-and-space-stations/space-shuttle/": {"t": "Space Shuttle", "s": "Partially reusable low Earth orbital spacecraft system."}, "https://codexery.com/aircraft-components/e/aircraft-components/drogue-parachute/": {"t": "Drogue parachute", "s": "A parachute used for braking, stability, or deploying larger parachutes."}, "https://codexery.com/james-bond/e/factions/cia/": {"t": "CIA", "s": "America's shadow warriors: powerful allies and occasional rivals in the global spy game."}, "https://codexery.com/space-missions/e/space-missions/sputnik-1/": {"t": "Sputnik 1", "s": "Sputnik 1, meaning \"Satellite-One\" in Russian, was the first artificial Earth satellite."}, "https://codexery.com/planets-stellar-astronomy/e/planets-and-stellar-astronomy/solar-system/": {"t": "Solar System", "s": "The Sun and all objects gravitationally bound to it.", "i": "https://codexery.com/planets-stellar-astronomy/img/planets-and-stellar-astronomy/solar-system.webp", "c": "via Wikipedia: Solar System · see source"}, "https://codexery.com/historical-figures/e/notable/dwight-d-eisenhower/": {"t": "Dwight D. Eisenhower", "s": "34th president of the United States and Supreme Commander of Allied forces in Europe during World War II."}, "https://codexery.com/space-program-of-the-united-states/e/space-program-of-the-united-states/space-program-of-the-united-states/": {"t": "Space program of the United States", "s": "U.S. space policy spans civilian, military, and commercial programs."}, "https://codexery.com/spacecraft-that-broke-apart-in-space/e/spacecraft-that-broke-apart-in-space/rm-81-agena/": {"t": "RM-81 Agena", "s": "American upper stage and satellite bus used for reconnaissance and docking."}, "https://codexery.com/radio-manufacturers/e/radio-manufacturers/general-electric/": {"t": "General Electric", "s": "American conglomerate formed from Edison and Thomson-Houston merger in 1892."}, "https://codexery.com/islands-and-archipelagos/e/islands-and-archipelagos/hawaii/": {"t": "Hawaii", "s": "Island state with a tropical climate and diverse heritage."}, "https://codexery.com/cities/e/capitals/washington-d-c/": {"t": "Washington, D.C.", "s": "The federal capital city of the United States, anchored on the Potomac River."}, "/e/military-space-program-of-the-united-states/thor-agena/": {"t": "Thor-Agena", "s": "First two-stage orbital launch vehicle; used for CORONA spy satellites."}, "https://codexery.com/climate/e/climate/atmosphere-of-earth/": {"t": "Atmosphere of Earth", "s": "The gaseous envelope surrounding Earth, essential for life and climate."}, "/e/military-space-program-of-the-united-states/missile-defense-alarm-system/": {"t": "Missile Defense Alarm System", "s": "Early-warning satellite system for detecting Soviet ICBM launches."}, "https://codexery.com/optics-and-color/e/optics-and-color/focal-length/": {"t": "Focal length", "s": "Measure of how strongly an optical system bends light.", "i": "https://codexery.com/optics-and-color/img/optics-and-color/focal-length.webp", "c": "cmglee, chensiyuan · CC BY-SA 4.0"}, "https://codexery.com/manufacturing-and-materials/e/manufacturing-and-materials/polyester/": {"t": "Polyester", "s": "A versatile polymer family used in textiles, bottles, and engineering.", "i": "https://codexery.com/manufacturing-and-materials/img/manufacturing-and-materials/polyester.webp", "c": "Wikifrits · CC0"}, "https://codexery.com/austrian-inventions/e/austrian-inventions/petzval-lens/": {"t": "Petzval lens", "s": "First mathematically calculated precision objective in photography history."}, "https://codexery.com/inventors-and-engineers/e/inventors-and-engineers/luis-walter-alvarez/": {"t": "Luis Walter Alvarez", "s": "Nobel-winning physicist who advanced radar, particle physics, and asteroid impact theory."}, "https://codexery.com/constitutional-law/e/constitutional-law/national-security/": {"t": "National security", "s": "Security and defense of a sovereign state and its institutions."}, "https://codexery.com/phantom-places-discovery/e/phantom-places-and-discovery/remote-sensing/": {"t": "Remote sensing", "s": "Acquiring information about objects without physical contact."}, "https://codexery.com/space-program-of-the-soviet-union/e/space-program-of-the-soviet-union/soviet-space-program/": {"t": "Soviet space program", "s": "State space program of the Soviet Union, 1951–1991."}, "https://codexery.com/magazines-newspapers/e/magazines-and-newspapers/foreign-affairs/": {"t": "Foreign Affairs", "s": "An American journal of international relations and U.S. foreign policy, published by the Council on Foreign Relations.", "i": "https://codexery.com/magazines-newspapers/img/magazines-and-newspapers/foreign-affairs.webp", "c": "Foreign Affairs · via Wikipedia: Foreign Affairs · Fair use"}, "https://codexery.com/media-and-publishing/e/media-and-publishing/the-new-york-times/": {"t": "The New York Times", "s": "The Gray Lady, a U.S."}, "/e/military-space-program-of-the-united-states/mitex/": {"t": "MiTEx", "s": "Joint DARPA, USAF, and US Navy microsatellite technology demonstration."}, "https://codexery.com/fifa-world-cup/e/honours/saudi-arabia/": {"t": "Saudi Arabia", "s": "The Kingdom of Saudi Arabia: a land of ancient heritage, vast deserts, and global influence.", "i": "https://codexery.com/fifa-world-cup/img/honours/saudi-arabia.webp", "c": "via Wikipedia: Saudi Arabia at the FIFA World Cup · see source"}, "https://codexery.com/space-shuttle-program/e/space-shuttle-program/inertial-upper-stage/": {"t": "Inertial Upper Stage", "s": "Solid-fueled upper stage for Titan and Shuttle missions."}, "https://codexery.com/crewed-spacecraft-and-space-stations/e/crewed-spacecraft-and-space-stations/space-shuttle-atlantis/": {"t": "Space Shuttle Atlantis", "s": "Fourth operational Space Shuttle, flew the program's final mission."}, "https://codexery.com/space-shuttle-missions/e/space-shuttle-missions/sts-44/": {"t": "STS-44", "s": "U.S. Department of Defense shuttle mission deploying DSP-16 satellite."}, "https://codexery.com/former-spanish-colonies/e/former-spanish-colonies/colorado/": {"t": "Colorado", "s": "A landlocked state with mountains, plains, and a history of gold rushes."}, "https://codexery.com/satellite-operators/e/satellite-operators/space-systems-command/": {"t": "Space Systems Command", "s": "Space Force field command for acquisition, launch, and logistics.", "i": "https://codexery.com/satellite-operators/img/satellite-operators/space-systems-command.webp", "c": "via Wikipedia: Space Systems Command · see source"}, "https://codexery.com/project-gemini/e/project-gemini/manned-orbiting-laboratory/": {"t": "Manned Orbiting Laboratory", "s": "USAF crewed reconnaissance space station program, canceled without crewed flights.", "i": "https://codexery.com/project-gemini/img/project-gemini/manned-orbiting-laboratory.webp", "c": "via Wikipedia: Manned Orbiting Laboratory · see source"}, "https://codexery.com/telescope-types/e/telescope-types/infrared-telescope/": {"t": "Infrared telescope", "s": "Telescope using infrared light to detect celestial bodies."}, "/e/military-space-program-of-the-united-states/space-based-infrared-system/": {"t": "Space-Based Infrared System", "s": "U.S. Space Force infrared system for missile warning and defense."}, "https://codexery.com/satellite-navigation-and-gps/e/satellite-navigation-and-gps/gps-block-iif/": {"t": "GPS Block IIF", "s": "Interim GPS satellites bridging to Block III, final Block II series."}, "https://codexery.com/space-missions/e/space-missions/parker-solar-probe/": {"t": "Parker Solar Probe", "s": "First spacecraft to fly into the Sun's low corona.", "i": "https://codexery.com/space-missions/img/space-missions/parker-solar-probe.webp", "c": "via Wikipedia: Parker Solar Probe · see source"}, "/e/military-space-program-of-the-united-states/defense-support-program/": {"t": "Defense Support Program", "s": "Space-based early warning system for missile and nuclear detection."}, "https://codexery.com/spacecraft-that-broke-apart-in-space/e/spacecraft-that-broke-apart-in-space/delta-rocket-family/": {"t": "Delta (rocket family)", "s": "American expendable launch system family, 1960–2024."}, "https://codexery.com/apollo-program/e/apollo-program/cape-canaveral-space-launch-complex-37/": {"t": "Cape Canaveral Space Launch Complex 37", "s": "Apollo-era launch complex now being adapted for Starship."}, "https://codexery.com/space-shuttle-program/e/space-shuttle-program/rs-25/": {"t": "RS-25", "s": "Liquid-fuel cryogenic rocket engine for Space Shuttle and SLS."}, "https://codexery.com/crewed-spacecraft-and-space-stations/e/crewed-spacecraft-and-space-stations/crew-exploration-vehicle/": {"t": "Crew Exploration Vehicle", "s": "NASA's competition to design a spacecraft for the Vision for Space Exploration."}, "https://codexery.com/crewed-spacecraft-and-space-stations/e/crewed-spacecraft-and-space-stations/orion-spacecraft/": {"t": "Orion (spacecraft)", "s": "NASA's deep-space crew capsule for Artemis lunar missions."}, "https://codexery.com/artemis-program/e/artemis-program/space-launch-system/": {"t": "Space Launch System", "s": "NASA's super heavy-lift rocket for the Artemis program.", "i": "https://codexery.com/artemis-program/img/artemis-program/space-launch-system.webp", "c": "via Wikipedia: Space Launch System · see source"}, "https://codexery.com/satellite-navigation-and-gps/e/satellite-navigation-and-gps/gps-satellite-blocks/": {"t": "GPS satellite blocks", "s": "Generations of GPS satellites, from Block I to Block IIIF."}, "https://codexery.com/construction-materials/e/construction-and-materials/composite-material/": {"t": "Composite material", "s": "Composite materials merge dissimilar constituents for enhanced properties."}, "https://codexery.com/soyuz-programme/e/soyuz-programme/soyuz-rocket-family/": {"t": "Soyuz (rocket family)", "s": "Soyuz is the most-launched rocket family in spaceflight history."}, "https://codexery.com/earth/e/earth/earth-science/": {"t": "Earth science", "s": "Study of Earth's physical, chemical, and biological systems and interactions."}, "https://codexery.com/geology/e/geology/geodesy/": {"t": "Geodesy", "s": "Science of measuring Earth's geometry, gravity, and spatial orientation."}, "https://codexery.com/satellite-imagery/e/satellite-imagery/earth-observation-satellite/": {"t": "Earth observation satellite", "s": "Satellites that observe Earth from orbit for diverse applications."}, "https://codexery.com/coastal-marine-geology/e/coastal-and-marine-geology/oceanic-trench/": {"t": "Oceanic trench", "s": "Long, narrow depressions marking convergent plate boundaries on the ocean floor."}, "https://codexery.com/satellites/e/satellites/satellite-ground-track/": {"t": "Satellite ground track", "s": "The path on Earth directly below a satellite's orbit."}, "/e/military-space-program-of-the-united-states/titan-rocket-family/": {"t": "Titan (rocket family)", "s": "American ICBM and launch vehicle family, 1959–2005."}, "https://codexery.com/major-wars/e/major-wars/vietnam-war/": {"t": "Vietnam War", "s": "Cold War proxy war ending in communist victory across Indochina."}, "https://codexery.com/units-measurement/e/units-and-measurement/watt/": {"t": "Watt", "s": "SI unit of power, equal to one joule per second."}, "https://codexery.com/radio-modulation-modes/e/radio-modulation-modes/frequency-modulation/": {"t": "Frequency modulation", "s": "Frequency modulation varies carrier frequency with message signal amplitude."}, "https://codexery.com/radio-modulation-modes/e/radio-modulation-modes/multiple-frequency-shift-keying/": {"t": "Multiple frequency-shift keying", "s": "MFSK uses multiple tones to transmit data with constant envelope."}, "https://codexery.com/satellites/e/satellites/satellite/": {"t": "Satellite", "s": "Artificial objects placed into orbit around a celestial body."}, "https://codexery.com/satellites/e/satellites/satellite-constellation/": {"t": "Satellite constellation", "s": "A coordinated group of satellites providing continuous global coverage."}, "https://codexery.com/electricity-and-magnetism/e/electricity-and-magnetism/electric-power/": {"t": "Electric power", "s": "Electric power is the rate of electrical energy transfer.", "i": "https://codexery.com/electricity-and-magnetism/img/electricity-and-magnetism/electric-power.webp", "c": "Alan O'Dowd · CC BY-SA 2.0"}, "/e/military-space-program-of-the-united-states/corona-satellite/": {"t": "CORONA (satellite)", "s": "American strategic reconnaissance satellite program, 1959–1972."}, "https://codexery.com/space-launch-vehicles-of-the-soviet/e/space-launch-vehicles-of-the-soviet-union/r-7-semyorka/": {"t": "R-7 Semyorka", "s": "World's first ICBM, basis for the R-7 rocket family."}, "https://codexery.com/ancient-greek-astronomy/e/ancient-greek-astronomy/spherical-earth/": {"t": "Spherical Earth", "s": "Earth is approximately spherical, confirmed by ancient and modern science."}, "https://codexery.com/regions-cultural-spheres/e/regions-and-cultural-spheres/northern-hemisphere/": {"t": "Northern Hemisphere", "s": "Northern Hemisphere: most populous, land-rich half of Earth.", "i": "https://codexery.com/regions-cultural-spheres/img/regions-and-cultural-spheres/northern-hemisphere.webp", "c": "via Wikipedia: Northern Hemisphere · see source"}, "https://codexery.com/fifa-world-cup/e/honours/england/": {"t": "England", "s": "Land of the Angles, birthplace of football and the Industrial Revolution."}, "https://codexery.com/astrophotography/e/astrophotography/thermographic-camera/": {"t": "Thermographic camera", "s": "A device that visualizes temperature by detecting infrared radiation.", "i": "https://codexery.com/astrophotography/img/astrophotography/thermographic-camera.webp", "c": "Asurnipal · CC BY-SA 4.0"}, "https://codexery.com/science-measurement/e/science-and-measurement/telescope/": {"t": "Telescope", "s": "Observing the universe across the electromagnetic spectrum", "i": "https://codexery.com/science-measurement/img/science-and-measurement/telescope.webp", "c": "Pelligton · CC BY-SA 4.0"}, "https://codexery.com/manufacturing-and-materials/e/manufacturing-and-materials/photographic-film/": {"t": "Photographic film", "s": "Light-sensitive medium for capturing photographic images."}, "https://codexery.com/transportation-engineering/e/transportation-engineering/airplane/": {"t": "Airplane", "s": "Fixed-wing aircraft propelled by thrust, from the Wright brothers to modern jets.", "i": "https://codexery.com/transportation-engineering/img/transportation-engineering/airplane.webp", "c": "SamKramer123 · CC BY 4.0"}, 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system based on GSM, using W-CDMA radio access."}, "https://codexery.com/media-and-publishing/e/media-and-publishing/multimedia/": {"t": "Multimedia", "s": "Combining text, audio, images, video, and animation into interactive presentations.", "i": "https://codexery.com/media-and-publishing/img/media-and-publishing/multimedia.webp", "c": "Caspter · CC0"}, "https://codexery.com/fifa-world-cup/e/honours/italy/": {"t": "Italy", "s": "A cultural superpower with the eighth-largest economy and the most UNESCO sites."}, "https://codexery.com/military-and-two-way-radios/e/military-and-two-way-radios/an-arc-210/": {"t": "AN/ARC-210", "s": "Multi-mode airborne radio with anti-jam and secure communications."}, "https://codexery.com/military-and-two-way-radios/e/military-and-two-way-radios/an-prc-117/": {"t": "AN/PRC-117", "s": "Family of multiband software-defined combat-net radios for US and allied forces."}, "https://codexery.com/lines-hemispheres/e/lines-and-hemispheres/north-pole/": {"t": 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"https://codexery.com/extraterrestrial-orbiters/e/extraterrestrial-orbiters/juno-spacecraft/": {"t": "Juno (spacecraft)", "s": "NASA solar-powered probe orbiting Jupiter since 2016.", "i": "https://codexery.com/extraterrestrial-orbiters/img/extraterrestrial-orbiters/juno-spacecraft.webp", "c": "NASA/JPL-Caltech · Public domain"}, "https://codexery.com/astrobiology-space-missions/e/astrobiology-space-missions/mars-science-laboratory/": {"t": "Mars Science Laboratory", "s": "NASA robotic mission that landed the Curiosity rover on Mars."}, "https://codexery.com/media-and-publishing/e/media-and-publishing/the-wall-street-journal/": {"t": "The Wall Street Journal", "s": "American business newspaper, newspaper of record, center-right editorial page."}, "https://codexery.com/science-measurement/e/science-and-measurement/machine-learning/": {"t": "Machine learning", "s": "Statistical algorithms that learn from data without explicit programming."}, 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Suzy Rice Vector:  Weweje · via Wikipedia: Star Wars · Public domain"}, "https://codexery.com/major-wars/e/major-wars/second-world-war/": {"t": "Second World War", "s": "Global conflict between Allies and Axis, deadliest in history."}, "https://codexery.com/flight-instruments-and-avionics/e/flight-instruments-and-avionics/radar/": {"t": "Radar", "s": "Radio waves detect and track objects by reflection."}, "https://codexery.com/scientists-and-mathematicians/e/scientists-and-mathematicians/edward-teller/": {"t": "Edward Teller", "s": "Hungarian-American physicist, father of the hydrogen bomb."}, "https://codexery.com/crewed-spacecraft-and-space-stations/e/crewed-spacecraft-and-space-stations/salyut-3/": {"t": "Salyut 3", "s": "Soviet military space station, first Almaz station successfully crewed."}, "https://codexery.com/human-spaceflight-programs/e/human-spaceflight-programs/space-shuttle-program/": {"t": "Space Shuttle program", "s": "NASA's reusable spaceplane program flew 135 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