{"https://codexery.com/astronomy-space/e/astronomy-and-space/mercury-planet/": {"t": "Mercury (planet)", "s": "Smallest planet and closest to the Sun."}, "https://codexery.com/electromagnetism-and-waves/e/electromagnetism-and-waves/magnetic-field/": {"t": "Magnetic field", "s": "A vector field quantifying magnetic influence at a given location."}, "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/planets-and-dwarf-planets/e/planets-and-dwarf-planets/venus/": {"t": "Venus", "s": "Earth's twin, hottest planet, shrouded in sulfuric acid clouds."}, "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/chemical-elements-metals/e/chemical-elements-and-metals/sodium/": {"t": "Sodium", "s": "Soft, reactive alkali metal essential for life."}, "https://codexery.com/chemical-elements-metals/e/chemical-elements-and-metals/potassium/": {"t": "Potassium", "s": "Soft alkali metal essential to life and widely used in fertilizers."}, "https://codexery.com/relativity-and-gravitation/e/relativity-and-gravitation/gravitational-field/": {"t": "Gravitational field", "s": "A vector field explaining gravitational influences around a body.", "i": "https://codexery.com/relativity-and-gravitation/img/relativity-and-gravitation/gravitational-field.webp", "c": "MikeRun · CC BY-SA 4.0"}, "https://codexery.com/space-program-of-france/e/space-program-of-france/guiana-space-centre/": {"t": "Guiana Space Centre", "s": "European spaceport in South America near the equator."}, "https://codexery.com/exploration-of-mars/e/exploration-of-mars/heliocentric-orbit/": {"t": "Heliocentric orbit", "s": "An orbit around the Sun, followed by planets, comets, asteroids, and many artificial probes."}, "https://codexery.com/comets/e/comets/provisional-designation-in-astronomy/": {"t": "Provisional designation in astronomy", "s": "Standardized naming for newly discovered astronomical objects."}, "https://codexery.com/missions-to-the-sun/e/missions-to-the-sun/solar-orbiter/": {"t": "Solar Orbiter", "s": "ESA-NASA probe studying the Sun's poles and inner heliosphere."}, "https://codexery.com/orbits-and-celestial-mechanics/e/orbits-and-celestial-mechanics/polar-orbit/": {"t": "Polar orbit", "s": "Satellite orbit passing near both poles each revolution.", "i": "https://codexery.com/orbits-and-celestial-mechanics/img/orbits-and-celestial-mechanics/polar-orbit.webp", "c": "NOAA · Public domain"}, "https://codexery.com/uav-manufacturers/e/uav-manufacturers/lockheed-martin/": {"t": "Lockheed Martin", "s": "Top U.S. federal contractor since at least 2008."}, "/e/extraterrestrial-orbiters/europa-clipper/": {"t": "Europa Clipper", "s": "NASA probe to study Europa's subsurface ocean via flybys.", "i": "https://codexery.com/extraterrestrial-orbiters/img/extraterrestrial-orbiters/europa-clipper.webp", "c": "NASA/JPL-Caltech · Public domain"}, "https://codexery.com/planets-and-dwarf-planets/e/planets-and-dwarf-planets/saturn/": {"t": "Saturn", "s": "Saturn is a gas giant with rings and the lowest density in the Solar System."}, "https://codexery.com/moons-of-saturn/e/moons-of-saturn/titan-moon/": {"t": "Titan (moon)", "s": "Saturn's largest moon, with a thick atmosphere and liquid lakes."}, "https://codexery.com/scientists-and-mathematicians/e/scientists-and-mathematicians/christiaan-huygens/": {"t": "Christiaan Huygens", "s": "Dutch polymath who advanced optics, mechanics, and astronomy."}, "https://codexery.com/planets-and-dwarf-planets/e/planets-and-dwarf-planets/jupiter/": {"t": "Jupiter", "s": "Largest planet in the Solar System, a gas giant with a Great Red Spot."}, "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/space-program-of-france/e/space-program-of-france/thales-alenia-space/": {"t": "Thales Alenia Space", "s": "European joint venture for satellites and space infrastructure."}, "https://codexery.com/antenna-types/e/antenna-types/directional-antenna/": {"t": "Directional antenna", "s": "A directional antenna focuses radio waves in a specific direction."}, "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/electromagnetism-and-radiation/e/electromagnetism-and-radiation/visible-spectrum/": {"t": "Visible spectrum", "s": "The range of electromagnetic radiation visible to the human eye."}, "https://codexery.com/historical-events-places/e/historical-events-and-places/space-race/": {"t": "Space Race", "s": "Cold War competition for spaceflight supremacy between the US and USSR."}, "/e/extraterrestrial-orbiters/galileo-spacecraft/": {"t": "Galileo (spacecraft)", "s": "First spacecraft to orbit an outer planet.", "i": "https://codexery.com/extraterrestrial-orbiters/img/extraterrestrial-orbiters/galileo-spacecraft.webp", "c": "NASA on The Commons · No restrictions"}, "https://codexery.com/moons-of-saturn/e/moons-of-saturn/enceladus/": {"t": "Enceladus", "s": "A small, icy moon with active geysers and a subsurface ocean.", "i": "https://codexery.com/moons-of-saturn/img/moons-of-saturn/enceladus.webp", "c": "Justin Cowart · Public domain"}, "https://codexery.com/notable-asteroids/e/notable-asteroids/asteroid-belt/": {"t": "Asteroid belt", "s": "A torus-shaped region between Mars and Jupiter containing many asteroids."}, "https://codexery.com/planets-and-dwarf-planets/e/planets-and-dwarf-planets/ceres-dwarf-planet/": {"t": "Ceres (dwarf planet)", "s": "Dwarf planet in the main asteroid belt, first discovered asteroid."}, "https://codexery.com/inorganic-compounds-materials/e/inorganic-compounds-and-materials/hydrazine/": {"t": "Hydrazine", "s": "A versatile inorganic compound used in propellants, foams, and pharmaceuticals.", "i": "https://codexery.com/inorganic-compounds-materials/img/inorganic-compounds-and-materials/hydrazine.webp", "c": "Ben Mills · Public domain"}, "https://codexery.com/space-program-of-the-united-states/e/space-program-of-the-united-states/voyager-program/": {"t": "Voyager program", "s": "Two probes exploring the outer planets and interstellar space."}, "https://codexery.com/u-s-states/e/u-s-states/ohio/": {"t": "Ohio", "s": "Midwestern U.S. state, birthplace of seven presidents and aviation."}, "https://codexery.com/chemistry-materials/e/chemistry-and-materials/mercury-element/": {"t": "Mercury (element)", "s": "A heavy, silvery liquid metal with unique physical properties and high toxicity."}, "https://codexery.com/nasa-space-probes/e/nasa-space-probes/deep-space-1/": {"t": "Deep Space 1", "s": "NASA technology demonstrator testing ion propulsion and autonomous navigation."}, "https://codexery.com/types-of-planet/e/types-of-planet/terrestrial-planet/": {"t": "Terrestrial planet", "s": "Rocky planets with solid surfaces, including Earth and similar worlds."}, "https://codexery.com/international-organizations-and-agreemen/e/international-organizations-and-agreements/international-astronomical-union/": {"t": "International Astronomical Union", "s": "Global authority for astronomical naming and cooperation."}, "https://codexery.com/planets-and-dwarf-planets/e/planets-and-dwarf-planets/iau-definition-of-planet/": {"t": "IAU definition of planet", "s": "IAU definition reclassified Pluto as a dwarf planet in 2006."}, "https://codexery.com/planets-and-dwarf-planets/e/planets-and-dwarf-planets/dwarf-planet/": {"t": "Dwarf planet", "s": "A rounded solar orbiter that has not cleared its orbit."}, "https://codexery.com/mechanics-and-fluid-dynamics/e/mechanics-and-fluid-dynamics/hydrostatic-equilibrium/": {"t": "Hydrostatic equilibrium", "s": "Condition where gravity and pressure forces balance in a fluid."}, "https://codexery.com/space-missions/e/space-missions/new-horizons/": {"t": "New Horizons", "s": "The first spacecraft to explore Pluto and the Kuiper belt.", "i": "https://codexery.com/space-missions/img/space-missions/new-horizons.webp", "c": "via Wikipedia: New Horizons · see source"}, "https://codexery.com/space-programme-of-germany/e/space-programme-of-germany/german-aerospace-center/": {"t": "German Aerospace Center", "s": "Germany's national research centre for aeronautics, space, energy and transport."}, "https://codexery.com/stars-and-stellar-objects/e/stars-and-stellar-objects/comet/": {"t": "Comet", "s": "Icy wanderers that bloom when near the Sun."}, "https://codexery.com/geology/e/geology/geyser/": {"t": "Geyser", "s": "A rare spring that erupts intermittently with steam and water."}, "https://codexery.com/microbiology-and-cell-biology/e/microbiology-and-cell-biology/microorganism/": {"t": "Microorganism", "s": "Microscopic organisms that shape life, health, and history."}, "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/hole-making/e/hole-making/icemole/": {"t": "IceMole", "s": "Autonomous ice probe with directional melting and recovery capability."}, "/e/extraterrestrial-orbiters/europa-orbiter/": {"t": "Europa Orbiter", "s": "A cancelled NASA mission to explore Jupiter's moon Europa for a subsurface ocean.", "i": "https://codexery.com/extraterrestrial-orbiters/img/extraterrestrial-orbiters/europa-orbiter.webp", "c": "NASA/JPL/DLR · Public domain"}, "/e/extraterrestrial-orbiters/jupiter-icy-moons-orbiter/": {"t": "Jupiter Icy Moons Orbiter", "s": "A proposed NASA spacecraft to explore Jupiter's icy moons with nuclear-electric propulsion.", "i": "https://codexery.com/extraterrestrial-orbiters/img/extraterrestrial-orbiters/jupiter-icy-moons-orbiter.webp", "c": "NASA/Uncredited concept artist · Public domain"}, "https://codexery.com/moons-with-a-prograde-orbit/e/moons-with-a-prograde-orbit/europa-moon/": {"t": "Europa (moon)", "s": "Jupiter's icy moon with a subsurface ocean."}, "https://codexery.com/planets-and-dwarf-planets/e/planets-and-dwarf-planets/mars/": {"t": "Mars", "s": "The fourth planet from the Sun, a desert world with polar ice caps."}, "https://codexery.com/moons-of-jupiter/e/moons-of-jupiter/ganymede-moon/": {"t": "Ganymede (moon)", "s": "Largest moon in the Solar System, with its own magnetic field."}, "https://codexery.com/meteorology/e/meteorology/water-vapor/": {"t": "Water vapor", "s": "The gaseous phase of water, a key greenhouse gas and component of Earth's hydrosphere."}, "/e/extraterrestrial-orbiters/jupiter-icy-moons-explorer/": {"t": "Jupiter Icy Moons Explorer", "s": "ESA's mission to explore Jupiter's icy moons", "i": "https://codexery.com/extraterrestrial-orbiters/img/extraterrestrial-orbiters/jupiter-icy-moons-explorer.webp", "c": "European Space Agency · CC BY-SA 3.0 igo"}, "https://codexery.com/stars-and-stellar-objects/e/stars-and-stellar-objects/callisto-moon/": {"t": "Callisto (moon)", "s": "Second-largest moon of Jupiter, with a heavily cratered surface."}, "https://codexery.com/astronomy-space/e/astronomy-and-space/io-moon/": {"t": "Io (moon)", "s": "Io is Jupiter's innermost Galilean moon, the most volcanically active body known."}, "https://codexery.com/astronomy/e/astronomy/extraterrestrial-life/": {"t": "Extraterrestrial life", "s": "Hypothetical life originating from worlds beyond Earth."}, "https://codexery.com/universities/e/universities/johns-hopkins-university/": {"t": "Johns Hopkins University", "s": "First U.S. research university, founded by a Quaker philanthropist.", "i": "https://codexery.com/universities/img/universities/johns-hopkins-university.webp", "c": "Daderot · Public domain"}, "/e/extraterrestrial-orbiters/cassini-huygens/": {"t": "Cassini–Huygens", "s": "Joint mission to study Saturn and its moons.", "i": "https://codexery.com/extraterrestrial-orbiters/img/extraterrestrial-orbiters/cassini-huygens.webp", "c": "Photograph by Mike Peel ( www.mikepeel.net ). · CC BY-SA 4.0"}, "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."}, "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/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"}, "https://codexery.com/sample-return-missions/e/sample-return-missions/stardust-spacecraft/": {"t": "Stardust (spacecraft)", "s": "NASA's first sample return mission to collect comet and cosmic dust."}, "/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/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/notable-asteroids/e/notable-asteroids/243-ida/": {"t": "243 Ida", "s": "First asteroid found to have a natural satellite."}, "https://codexery.com/space-shuttle-missions/e/space-shuttle-missions/sts-34/": {"t": "STS-34", "s": "Deployed Galileo probe; first shuttle with two women since Challenger."}, "https://codexery.com/chemistry-materials/e/chemistry-and-materials/nitrogen/": {"t": "Nitrogen", "s": "Nitrogen is a colourless, odourless diatomic gas forming 78% of Earth's air."}, "https://codexery.com/named-stars/e/named-stars/canopus/": {"t": "Canopus", "s": "Second-brightest star in the night sky, a white giant in Carina."}, "https://codexery.com/flight-instruments-and-avionics/e/flight-instruments-and-avionics/inertial-reference-unit/": {"t": "Inertial reference unit", "s": "An inertial sensor for navigation without external references."}, "https://codexery.com/moons-with-a-prograde-orbit/e/moons-with-a-prograde-orbit/galilean-moons/": {"t": "Galilean moons", "s": "Jupiter's four largest moons, discovered by Galileo in 1610."}, "https://codexery.com/television-series-set-in-the-23rd/e/television-series-set-in-the-23rd-century/star-trek-the-original-series/": {"t": "Star Trek: The Original Series", "s": "Set in the 23rd century, it follows the USS Enterprise crew."}, "https://codexery.com/disasters/e/historic-disasters/the-challenger-disaster/": {"t": "The Challenger disaster", "s": "A colliery spoil tip collapsed onto a Welsh village, killing 116 children and 28 adults."}, "https://codexery.com/missions-to-the-moon/e/missions-to-the-moon/lunar-flyby/": {"t": "Lunar flyby", "s": "A spacecraft passes near the Moon without entering orbit.", "i": "https://codexery.com/missions-to-the-moon/img/missions-to-the-moon/lunar-flyby.webp", "c": "NASA Johnson Space Center / NASA/PHOTO_ LUNA_POSADAS_N · Public domain"}, "https://codexery.com/moons-of-jupiter/e/moons-of-jupiter/thebe-moon/": {"t": "Thebe (moon)", "s": "Thebe is Jupiter's fourth moon and second largest inner satellite."}, "https://codexery.com/moons-of-jupiter/e/moons-of-jupiter/amalthea-moon/": {"t": "Amalthea (moon)", "s": "Jupiter's fifth moon, last discovered by direct visual observation."}, "https://codexery.com/moons-of-jupiter/e/moons-of-jupiter/adrastea-moon/": {"t": "Adrastea (moon)", "s": "Smallest inner moon of Jupiter, discovered by Voyager 2 in 1979."}, "https://codexery.com/moons-of-jupiter/e/moons-of-jupiter/metis-moon/": {"t": "Metis (moon)", "s": "Innermost known moon of Jupiter, discovered by Voyager 1 in 1979."}, "https://codexery.com/satellites/e/satellites/satellite/": {"t": "Satellite", "s": "Artificial objects placed into orbit around a celestial body."}, "https://codexery.com/roman-mythology/e/roman-mythology/roman-mythology/": {"t": "Roman mythology", "s": "Roman myths blend history, politics, and divine destiny.", "i": "https://codexery.com/roman-mythology/img/roman-mythology/roman-mythology.webp", "c": "Wikimedia Commons · Public domain"}, "https://codexery.com/space-probes-of-esa-japan-china-india/e/space-probes-of-esa-japan-china-india-and-the-ussr/europa-jupiter-system-mission-laplace/": {"t": "Europa Jupiter System Mission – Laplace", "s": "Proposed joint NASA/ESA mission to explore Jupiter's icy moons."}, "https://codexery.com/mythological-rapists/e/mythological-rapists/jupiter-god/": {"t": "Jupiter (god)", "s": "King of the Roman gods, sky and thunder deity."}, "https://codexery.com/miscellaneous/e/miscellaneous/french-guiana/": {"t": "French Guiana", "s": "French Guiana, officially named Guyane, is an overseas department and region of France situated on the northern coast of South America within the Guianas region", "i": "https://codexery.com/miscellaneous/img/miscellaneous/french-guiana.webp", "c": "via Wikipedia: Politics of French Guiana · see source"}, "https://codexery.com/astrophotography/e/astrophotography/x-ray-astronomy/": {"t": "X-ray astronomy", "s": "Observing the universe in X-rays from above Earth's atmosphere."}, "https://codexery.com/black-holes/e/black-holes/gravitational-wave/": {"t": "Gravitational wave", "s": "Ripples in spacetime carrying energy at light speed."}, "https://codexery.com/cities-on-rivers/e/cities-on-rivers/toulouse/": {"t": "Toulouse", "s": "The Pink City"}, "https://codexery.com/fifa-world-cup/e/honours/france/": {"t": "France", "s": "A global centre of art, science, cuisine and philosophy."}, "https://codexery.com/radio-propagation/e/radio-propagation/x-band/": {"t": "X band", "s": "A microwave band used for radar, space communications, and terrestrial broadband."}, "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/power-generation/e/power-generation/nuclear-reactor/": {"t": "Nuclear reactor", "s": "Device that controls nuclear fission for energy, propulsion, and research."}, "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/particle-and-nuclear-physics/e/particle-and-nuclear-physics/nuclear-fission/": {"t": "Nuclear fission", "s": "Nuclear fission splits atomic nuclei, releasing vast energy."}, "https://codexery.com/planets-and-dwarf-planets/e/planets-and-dwarf-planets/uranus/": {"t": "Uranus", "s": "The seventh planet, a tilted ice giant with extreme seasons."}, "https://codexery.com/moons-of-uranus-and-neptune/e/moons-of-uranus/miranda-moon/": {"t": "Miranda (moon)", "s": "Uranus's innermost round moon with extreme topography."}, "https://codexery.com/moons-with-a-prograde-orbit/e/moons-with-a-prograde-orbit/ariel-moon/": {"t": "Ariel (moon)", "s": "Uranus's fourth-largest moon with a complex icy surface."}, "https://codexery.com/moons-with-a-prograde-orbit/e/moons-with-a-prograde-orbit/oberon-moon/": {"t": "Oberon (moon)", "s": "Outermost major moon of Uranus, with a heavily cratered surface."}, "https://codexery.com/named-stars/e/named-stars/sun/": {"t": "Sun", "s": "The Sun is the central star of the Solar System."}, "https://codexery.com/chemistry-fundamentals/e/chemistry-fundamentals/chemical-element/": {"t": "Chemical element", "s": "Fundamental species of atom defined by proton count."}, "https://codexery.com/chemistry-materials/e/chemistry-and-materials/noble-gas/": {"t": "Noble gas", "s": "Group 18 elements with full valence shells and low reactivity."}, "https://codexery.com/notable-asteroids/e/notable-asteroids/near-earth-asteroid/": {"t": "Near-Earth asteroid", "s": "Near-Earth asteroids are small bodies whose orbits bring them close to Earth."}, "https://codexery.com/meteoroids/e/meteoroids/meteoroid/": {"t": "Meteoroid", "s": "Small rocky or metallic bodies moving through interplanetary space."}, "https://codexery.com/separation-and-purification-techniques/e/separation-and-purification-techniques/x-ray-spectroscopy/": {"t": "X-ray spectroscopy", "s": "Techniques for material analysis using X-ray radiation."}, "https://codexery.com/classical-mechanics/e/classical-mechanics/gravity/": {"t": "Gravity", "s": "Gravity is the fundamental attraction between objects with mass.", "i": "https://codexery.com/classical-mechanics/img/classical-mechanics/gravity.webp", "c": "https://commons.wikimedia.org/wiki/User:Nicoguaro · CC BY-SA 3.0"}, "https://codexery.com/periodic-comets/e/periodic-comets/4015-wilson-harrington/": {"t": "4015 Wilson–Harrington", "s": "A dual-status comet-asteroid with the longest asteroid name."}, "https://codexery.com/units-measurement/e/units-and-measurement/newton-unit/": {"t": "Newton (unit)", "s": "SI unit of force, named after Isaac Newton."}, "https://codexery.com/derelict-landers/e/derelict-landers/philae-spacecraft/": {"t": "Philae (spacecraft)", "s": "First spacecraft to land on a comet nucleus."}, "https://codexery.com/named-comets/e/named-comets/67p-churyumov-gerasimenko/": {"t": "67P/Churyumov–Gerasimenko", "s": "First comet orbited and landed upon by spacecraft."}, "https://codexery.com/missions-to-the-sun/e/missions-to-the-sun/solar-and-heliospheric-observatory/": {"t": "Solar and Heliospheric Observatory", "s": "ESA-NASA solar observatory that discovered over 5,000 comets."}, "https://codexery.com/space-probes-of-esa-japan-china-india/e/space-probes-of-esa-japan-china-india-and-the-ussr/cluster-ii-spacecraft/": {"t": "Cluster II (spacecraft)", "s": "Four-satellite ESA mission to study Earth's magnetosphere in 3D."}, "https://codexery.com/ancient-egyptian-language/e/ancient-egyptian-language/rosetta-stone/": {"t": "Rosetta Stone", "s": "Key to deciphering ancient Egyptian hieroglyphs."}, "https://codexery.com/legal-concepts-doctrines/e/legal-concepts-and-doctrines/decree/": {"t": "Decree", "s": "A legal proclamation issued by a head of state or other authority."}, "https://codexery.com/ancient-egyptian-obelisks/e/ancient-egyptian-obelisks/philae-obelisk/": {"t": "Philae obelisk", "s": "A bilingual obelisk that aided the decipherment of Egyptian hieroglyphs."}, "https://codexery.com/comets/e/comets/comet-nucleus/": {"t": "Comet nucleus", "s": "The solid, dark core of a comet, source of its activity."}, "https://codexery.com/moons-of-saturn/e/moons-of-saturn/enceladus-orbilander/": {"t": "Enceladus Orbilander", "s": "Proposed NASA Flagship mission to orbit and land on Enceladus.", "i": "https://codexery.com/moons-of-saturn/img/moons-of-saturn/enceladus-orbilander.webp", "c": "NASA, APL · Public domain"}, "https://codexery.com/planets-and-dwarf-planets/e/planets-and-dwarf-planets/neptune/": {"t": "Neptune", "s": "The only planet discovered through mathematical prediction, not direct observation."}, "https://codexery.com/chemical-elements-metals/e/chemical-elements-and-metals/plutonium/": {"t": "Plutonium", "s": "Plutonium is the element with the highest atomic number known to occur in nature."}, "https://codexery.com/space-missions/e/space-missions/voyager-2/": {"t": "Voyager 2", "s": "Only spacecraft to visit Uranus and Neptune."}, "https://codexery.com/astrobiology-space-missions/e/astrobiology-space-missions/mars-2020/": {"t": "Mars 2020", "s": "NASA mission to Mars seeking signs of past life."}, "https://codexery.com/astronomy/e/astronomy/exoplanet/": {"t": "Exoplanet", "s": "An exoplanet, also called an extrasolar planet, is any planet that exists beyond our Solar System.", "i": "https://codexery.com/astronomy/img/astronomy/exoplanet.webp", "c": "European Space Agency · CC BY-SA 3.0 igo"}, "https://codexery.com/moons-of-uranus-and-neptune/e/moons-of-neptune/triton-moon/": {"t": "Triton (moon)", "s": "Neptune's largest moon, captured from the Kuiper belt, with a retrograde orbit."}}