{"https://codexery.com/philosophers-thinkers/e/philosophers-and-thinkers/philolaus/": {"t": "Philolaus", "s": "Pythagorean philosopher who first wrote of a Central Fire universe."}, "https://codexery.com/ancient-greek-astronomy/e/ancient-greek-astronomy/pythagorean-astronomical-system/": {"t": "Pythagorean astronomical system", "s": "Early non-geocentric model with Earth orbiting a Central Fire."}, "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/meteoroids/e/meteoroids/meteoroid/": {"t": "Meteoroid", "s": "Small rocky or metallic bodies moving through interplanetary space."}, "https://codexery.com/spiral-galaxies/e/spiral-galaxies/milky-way/": {"t": "Milky Way", "s": "The barred spiral galaxy containing the Solar System."}, "https://codexery.com/named-comets/e/named-comets/c-1973-e1-kohoutek/": {"t": "C/1973 E1 (Kohoutek)", "s": "A comet hyped as the century's brightest that fell far short."}, "https://codexery.com/electromagnetism-and-waves/e/electromagnetism-and-waves/gamma-ray/": {"t": "Gamma ray", "s": "Penetrating electromagnetic radiation from nuclear decay and cosmic events."}, "https://codexery.com/astronomy-space/e/astronomy-and-space/nebular-hypothesis/": {"t": "Nebular hypothesis", "s": "Model explaining Solar System formation from gas and dust."}, "https://codexery.com/binary-and-multiple-stars/e/binary-and-multiple-stars/accretion-disk/": {"t": "Accretion disk", "s": "Accretion disks are ubiquitous structures that drive mass onto central objects."}, "https://codexery.com/disasters/e/historic-disasters/the-tunguska-event/": {"t": "The Tunguska event", "s": "Largest recorded impact event in history, flattening Siberian forest."}, "https://codexery.com/chemists-and-biochemists/e/chemists-and-biochemists/willard-libby/": {"t": "Willard Libby", "s": "Developed radiocarbon dating, revolutionizing archaeology and palaeontology."}, "https://codexery.com/atmospheric-ghost-lights/e/atmospheric-ghost-lights/ball-lightning/": {"t": "Ball lightning", "s": "Luminous spheres linked to thunderstorms, lasting seconds to minutes."}, "https://codexery.com/particle-and-nuclear-physics/e/particle-and-nuclear-physics/positron/": {"t": "Positron", "s": "First antimatter particle, predicted by Dirac, discovered by Anderson."}, "https://codexery.com/astronomy-space/e/astronomy-and-space/oort-cloud/": {"t": "Oort cloud", "s": "Theorized reservoir of icy bodies at the Solar System's edge."}, "https://codexery.com/cosmic-mysteries/e/cosmic-mysteries/gamma-ray-bursts/": {"t": "Gamma-ray bursts", "s": "Extremely energetic explosions in distant galaxies."}, "/e/hypothetical-astronomical-objects/hypothetical-astronomical-object/": {"t": "Hypothetical astronomical object", "s": "Unconfirmed celestial bodies proposed throughout history."}, "https://codexery.com/extraterrestrial-orbiters/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/moons-of-saturn/e/moons-of-saturn/iapetus-moon/": {"t": "Iapetus (moon)", "s": "Saturn's walnut-shaped moon with a dark and bright face.", "i": "https://codexery.com/moons-of-saturn/img/moons-of-saturn/iapetus-moon.webp", "c": "NASA / JPL · Public domain"}, "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/orbits-and-celestial-mechanics/e/orbits-and-celestial-mechanics/orbital-resonance/": {"t": "Orbital resonance", "s": "Orbital resonance shapes planetary systems through periodic gravitational interactions."}, "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/orbits-and-celestial-mechanics/e/orbits-and-celestial-mechanics/orbital-eccentricity/": {"t": "Orbital eccentricity", "s": "Parameter measuring deviation of an orbit from a perfect circle."}, "https://codexery.com/classical-mechanics-and-dynamics/e/classical-mechanics-and-dynamics/newton-s-law-of-universal-gravitation/": {"t": "Newton's law of universal gravitation", "s": "Gravity as a universal force between all masses."}, "https://codexery.com/reproduction-development/e/reproduction-and-development/pupa/": {"t": "Pupa", "s": "The transformative pupal stage bridges larva and adult insect."}, "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/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/stars-and-stellar-objects/e/stars-and-stellar-objects/asteroid/": {"t": "Asteroid", "s": "Rocky, metallic, or icy minor planets orbiting the Sun, mostly in the main belt between Mars and Jupiter."}, "https://codexery.com/notable-asteroids/e/notable-asteroids/earth-trojan/": {"t": "Earth trojan", "s": "Only two Earth trojan asteroids are known, both at L4."}, "https://codexery.com/cities-on-rivers/e/cities-on-rivers/toulouse/": {"t": "Toulouse", "s": "The Pink City"}, "https://codexery.com/physical-geography-elevation/e/physical-geography-and-elevation/altitude/": {"t": "Altitude", "s": "Vertical distance measurement with context-dependent definitions and critical aviation applications.", "i": "https://codexery.com/physical-geography-elevation/img/physical-geography-and-elevation/altitude.webp", "c": "CVersteeg · CC BY-SA 4.0"}, "https://codexery.com/writers-poets/e/writers-and-poets/jules-verne/": {"t": "Jules Verne", "s": "French novelist, poet, and playwright; creator of the Voyages extraordinaires."}, "https://codexery.com/space-exploration-novels/e/space-exploration-novels/around-the-moon/": {"t": "Around the Moon", "s": "Sequel to Verne's lunar voyage, continuing the trip to the Moon."}, "https://codexery.com/german-states/e/german-states/hamburg/": {"t": "Hamburg", "s": "Second-largest German city and major Hanseatic port."}, "https://codexery.com/orbits-and-celestial-mechanics/e/orbits-and-celestial-mechanics/orbital-period/": {"t": "Orbital period", "s": "Time for one full orbit around a primary body."}, "https://codexery.com/media-and-publishing/e/media-and-publishing/science-journal/": {"t": "Science (journal)", "s": "Peer-reviewed journal of the AAAS, covering all scientific disciplines."}, "https://codexery.com/astronomers-and-cosmologists/e/astronomers-and-cosmologists/clyde-tombaugh/": {"t": "Clyde Tombaugh", "s": "American astronomer who discovered Pluto in 1930.", "i": "https://codexery.com/astronomers-and-cosmologists/img/astronomers-and-cosmologists/clyde-tombaugh.webp", "c": "Unknown authorUnknown author · via Wikipedia: Clyde Tombaugh · Public domain"}, "https://codexery.com/planets-and-dwarf-planets/e/planets-and-dwarf-planets/pluto/": {"t": "Pluto", "s": "Dwarf planet in the Kuiper belt, once the ninth planet."}, "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/named-stars/e/named-stars/sun/": {"t": "Sun", "s": "The Sun is the central star of the Solar System."}, "https://codexery.com/astronomy-space/e/astronomy-and-space/main-sequence/": {"t": "Main sequence", "s": "Stars spend most of their lives on the main sequence."}, "https://codexery.com/creation-myths/e/creation-myths/cosmogony/": {"t": "Cosmogony", "s": "Models concerning the origin of the cosmos or universe."}, "https://codexery.com/topology-and-abstract-spaces/e/topology-and-abstract-spaces/topology/": {"t": "Topology", "s": "Study of properties preserved under continuous deformations."}, "https://codexery.com/particle-and-nuclear-physics/e/particle-and-nuclear-physics/quantum-field-theory/": {"t": "Quantum field theory", "s": "Framework combining field theory, relativity, and quantum mechanics."}, "https://codexery.com/particle-and-nuclear-physics/e/particle-and-nuclear-physics/string-theory/": {"t": "String theory", "s": "Theoretical framework replacing point particles with vibrating strings."}, "https://codexery.com/cosmology-concepts/e/cosmology-concepts/chronology-of-the-universe/": {"t": "Chronology of the universe", "s": "Standard timeline of cosmic history from inflation to present."}, "https://codexery.com/relativity-and-spacetime/e/relativity-and-spacetime/spacetime/": {"t": "Spacetime", "s": "A four-dimensional continuum fusing space and time."}, "https://codexery.com/materials-and-states-of-matter/e/materials-and-states-of-matter/phase-transition/": {"t": "Phase transition", "s": "Physical process of transition between states of a medium."}, "https://codexery.com/greek-inventions/e/greek-inventions/euclidean-geometry/": {"t": "Euclidean geometry", "s": "Ancient Greek mathematician who systematized geometry in Elements."}, "https://codexery.com/particle-and-nuclear-physics/e/particle-and-nuclear-physics/standard-model/": {"t": "Standard Model", "s": "Theory of three fundamental forces and elementary particles."}, "https://codexery.com/black-holes/e/black-holes/wormhole/": {"t": "Wormhole", "s": "Hypothetical tunnel connecting distant points in spacetime."}, "https://codexery.com/astronomical-radio-sources/e/astronomical-radio-sources/cosmic-microwave-background/": {"t": "Cosmic microwave background", "s": "Relic radiation from the early universe."}, "https://codexery.com/probability-statistics/e/probability-and-statistics/normal-distribution/": {"t": "Normal distribution", "s": "A continuous probability distribution with a bell-shaped density curve.", "i": "https://codexery.com/probability-statistics/img/probability-and-statistics/normal-distribution.webp", "c": "TYalaA · CC BY-SA 4.0"}, "https://codexery.com/space-missions/e/space-missions/the-hubble-space-telescope/": {"t": "The Hubble Space Telescope", "s": "A versatile space telescope observing ultraviolet, visible, and near-infrared light."}, "https://codexery.com/cosmic-mysteries/e/cosmic-mysteries/dark-matter/": {"t": "Dark matter", "s": "Invisible matter inferred from gravitational effects on cosmic scales."}, "https://codexery.com/nebulae/e/nebulae/interstellar-cloud/": {"t": "Interstellar cloud", "s": "Denser-than-average regions of the interstellar medium, where hydrogen can be neutral, ionized, or molecular."}, "https://codexery.com/galaxies-and-their-properties/e/galaxies-and-their-properties/galactic-tide/": {"t": "Galactic tide", "s": "Tidal force from a galaxy's gravitational field."}, "https://codexery.com/galaxy-clusters-and-groups/e/galaxy-clusters-and-groups/dragonfly-44/": {"t": "Dragonfly 44", "s": "Ultra diffuse galaxy with disputed dark matter content."}, "https://codexery.com/astrophotography/e/astrophotography/astronomical-survey/": {"t": "Astronomical survey", "s": "A general map or image of the sky lacking a specific target."}, "https://codexery.com/science-measurement/e/science-and-measurement/radio-telescope/": {"t": "Radio telescope", "s": "Detecting the invisible universe through radio waves.", "i": "https://codexery.com/science-measurement/img/science-and-measurement/radio-telescope.webp", "c": "Photograph by Mike Peel ( www.mikepeel.net ). · CC BY-SA 4.0"}, "https://codexery.com/radio-telescopes/e/radio-telescopes/arecibo-observatory/": {"t": "Arecibo Observatory", "s": "Former world's largest single-aperture radio telescope, collapsed in 2020."}, "https://codexery.com/radio-telescopes/e/radio-telescopes/parkes-observatory/": {"t": "Parkes Observatory", "s": "Home of Murriyang, the 64 m dish that relayed Apollo 11 TV."}, "https://codexery.com/separation-and-purification-techniques/e/separation-and-purification-techniques/spectroscopy/": {"t": "Spectroscopy", "s": "Spectroscopy measures and interprets electromagnetic spectra interacting with matter."}, "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/messier-objects/e/messier-objects/messier-99/": {"t": "Messier 99", "s": "A grand design spiral galaxy with a distorted arm and a hydrogen bridge."}, "https://codexery.com/constellations/e/constellations/andromeda/": {"t": "Andromeda", "s": "Andromeda: a princess, a constellation, and a galaxy."}, "https://codexery.com/cosmology-concepts/e/cosmology-concepts/redshift/": {"t": "Redshift", "s": "Redshift measures the stretching of light from moving or distant sources."}, "https://codexery.com/messier-objects/e/messier-objects/andromeda-galaxy/": {"t": "Andromeda Galaxy", "s": "Nearest major galaxy to the Milky Way."}, "https://codexery.com/messier-objects/e/messier-objects/triangulum-galaxy/": {"t": "Triangulum Galaxy", "s": "A spiral galaxy and third-largest member of the Local Group."}, "https://codexery.com/radio-telescopes/e/radio-telescopes/green-bank-telescope/": {"t": "Green Bank Telescope", "s": "World's largest fully steerable radio telescope."}, "/e/hypothetical-astronomical-objects/exomoon/": {"t": "Exomoon", "s": "Extrasolar moons remain unconfirmed but are theorized and sought.", "i": "https://codexery.com/hypothetical-astronomical-objects/img/hypothetical-astronomical-objects/exomoon.webp", "c": "NASA, ESA · via Wikipedia: Exomoon · CC BY 4.0"}, "/e/hypothetical-astronomical-objects/fifth-planet-hypothetical/": {"t": "Fifth planet (hypothetical)", "s": "Hypothetical former fifth planet between Mars and Jupiter."}, "/e/hypothetical-astronomical-objects/phaeton-hypothetical-planet/": {"t": "Phaeton (hypothetical planet)", "s": "Hypothetical destroyed planet proposed to explain the asteroid belt."}, "/e/hypothetical-astronomical-objects/planet-v/": {"t": "Planet V", "s": "Hypothetical fifth terrestrial planet proposed to explain the Late Heavy Bombardment."}, "/e/hypothetical-astronomical-objects/theia-hypothetical-planet/": {"t": "Theia (hypothetical planet)", "s": "Hypothetical planet whose collision with Earth formed the Moon."}, "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/cosmic-mysteries/e/cosmic-mysteries/tabby-s-star/": {"t": "Tabby's Star", "s": "A binary star with mysterious dimming events, possibly caused by an orphaned exomoon."}, "https://codexery.com/astronomy-space/e/astronomy-and-space/luminosity/": {"t": "Luminosity", "s": "Absolute measure of radiated electromagnetic energy per unit time."}, "https://codexery.com/stars-and-stellar-phenomena/e/stars-and-stellar-phenomena/light-curve/": {"t": "Light curve", "s": "Graph of celestial light intensity over time."}, "https://codexery.com/novels-by-robert-a-heinlein/e/novels-by-robert-a-heinlein/variable-star/": {"t": "Variable Star", "s": "A young musician flees romance aboard a starship colony mission."}, "https://codexery.com/stars-of-pisces/e/stars-of-pisces/rz-piscium/": {"t": "RZ Piscium", "s": "A dusty variable star possibly consuming its own planets."}, "https://codexery.com/stars-of-virgo/e/stars-of-virgo/wd-1145-017/": {"t": "WD 1145+017", "s": "First white dwarf with a transiting disintegrating planetesimal."}, "https://codexery.com/electromagnetism-and-waves/e/electromagnetism-and-waves/infrared/": {"t": "Infrared", "s": "Invisible electromagnetic radiation between visible light and microwaves."}, "https://codexery.com/stars-of-virgo/e/stars-of-virgo/wd-1145-017-b/": {"t": "WD 1145+017 b", "s": "First minor planet observed transiting a white dwarf star."}, "https://codexery.com/exoplanets/e/exoplanets/hot-jupiters/": {"t": "Hot Jupiters", "s": "Gas giants orbiting extremely close to their host stars.", "i": "https://codexery.com/exoplanets/img/exoplanets/hot-jupiters.webp", "c": "via Wikipedia: Hot Jupiter · see source"}, "https://codexery.com/black-holes/e/black-holes/tidal-disruption-event/": {"t": "Tidal disruption event", "s": "A star torn apart by a supermassive black hole."}, "https://codexery.com/stars-of-orion/e/stars-of-orion/pds-110/": {"t": "PDS 110", "s": "Young star with unexplained eclipses in 2008 and 2011."}, "https://codexery.com/named-stars/e/named-stars/47-ursae-majoris/": {"t": "47 Ursae Majoris", "s": "A yellow dwarf with three planets, including the first long-period exoplanet."}, "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/exoplanets/e/exoplanets/the-kepler-space-telescope/": {"t": "The Kepler space telescope", "s": "NASA telescope that discovered thousands of exoplanets."}, "https://codexery.com/exoplanets/e/exoplanets/rogue-planets/": {"t": "Rogue planets", "s": "Wandering worlds unbound to any star: rogue planets, free-floating planets, and isolated planetary-mass objects."}, "/e/hypothetical-astronomical-objects/disrupted-planet/": {"t": "Disrupted planet", "s": "A planet destroyed by a star or black hole."}, "https://codexery.com/brown-dwarfs/e/brown-dwarfs/2mass-j11193254-1137466/": {"t": "2MASS J11193254−1137466", "s": "A planetary-mass binary with a candidate exomoon transit."}, "https://codexery.com/brown-dwarfs/e/brown-dwarfs/brown-dwarf/": {"t": "Brown dwarf", "s": "Substellar objects fusing deuterium, bridging planets and stars.", "i": "https://codexery.com/brown-dwarfs/img/brown-dwarfs/brown-dwarf.webp", "c": "NASA/JPL-Caltech · Public domain"}, "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/astronomy-space/e/astronomy-and-space/lagrange-point/": {"t": "Lagrange point", "s": "Equilibrium points for small objects in two-body gravitational systems."}, "https://codexery.com/stars-of-cygnus/e/stars-of-cygnus/kepler-1625b/": {"t": "Kepler-1625b", "s": "A super-Jupiter with a candidate Neptune-sized exomoon."}, "https://codexery.com/exoplanets/e/exoplanets/the-habitable-zone/": {"t": "The habitable zone", "s": "The range of orbits around a star where liquid water could exist on a planetary surface."}, "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/exoplanets/e/exoplanets/the-transit-method/": {"t": "The transit method", "s": "Detects exoplanets by measuring starlight dimming during transit."}, "https://codexery.com/types-of-planet/e/types-of-planet/pulsar-planet/": {"t": "Pulsar planet", "s": "Planets orbiting pulsars, first exoplanets ever confirmed."}, "https://codexery.com/brown-dwarfs/e/brown-dwarfs/cd-35-2722/": {"t": "CD−35 2722", "s": "A red dwarf with a brown dwarf companion and a candidate exomoon."}, "/e/hypothetical-astronomical-objects/planet-nine/": {"t": "Planet Nine", "s": "Hypothetical planet proposed to explain distant Solar System orbits."}, "/e/hypothetical-astronomical-objects/five-planet-nice-model/": {"t": "Five-planet Nice model", "s": "A revised model of early Solar System evolution with five giant planets."}, "https://codexery.com/stellar-evolution/e/stellar-evolution/formation-and-evolution-of-the-solar-system/": {"t": "Formation and evolution of the Solar System", "s": "From nebular collapse to white dwarf: the Solar System's story."}, "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-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/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/astronomy/e/astronomy/giant-planet/": {"t": "Giant planet", "s": "A massive planet composed mainly of volatiles, not solid matter."}, "https://codexery.com/astronomy-space/e/astronomy-and-space/kuiper-belt/": {"t": "Kuiper belt", "s": "A circumstellar disc of icy bodies beyond Neptune."}, "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/objects-observed-by-stellar-occultation/e/objects-observed-by-stellar-occultation/2-pallas/": {"t": "2 Pallas", "s": "Second asteroid discovered, a high-inclination remnant protoplanet."}, "https://codexery.com/planets-and-dwarf-planets/e/planets-and-dwarf-planets/definition-of-planet/": {"t": "Definition of planet", "s": "A contested term for celestial bodies, defined by orbit, roundness, and dominance."}, "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/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/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/astronomers-and-astrophysicists/e/astronomers-and-astrophysicists/heinrich-wilhelm-matthias-olbers/": {"t": "Heinrich Wilhelm Matthias Olbers", "s": "German astronomer who discovered asteroids and formulated Olbers's paradox.", "i": "https://codexery.com/astronomers-and-astrophysicists/img/astronomers-and-astrophysicists/heinrich-wilhelm-matthias-olbers.webp", "c": "Rudolph Suhrlandt · via Wikipedia: Heinrich Wilhelm Matthias Olbers · Public domain"}, "https://codexery.com/narrative-forms-and-devices/e/narrative-forms-and-devices/science-fiction/": {"t": "Science fiction", "s": "Genre of speculative fiction about advanced technology and its consequences."}, "https://codexery.com/discoverers-of-astronomical-objects/e/discoverers-of-astronomical-objects/johann-elert-bode/": {"t": "Johann Elert Bode", "s": "German astronomer who popularised the Titius–Bode law and named Uranus."}, "https://codexery.com/types-of-planet/e/types-of-planet/earth-analog/": {"t": "Earth analog", "s": "A planet or moon with environmental conditions similar to Earth."}, "/e/hypothetical-astronomical-objects/fifth-giant/": {"t": "Fifth Giant", "s": "Hypothetical ice giant ejected from the early Solar System."}, "https://codexery.com/orbits-and-celestial-mechanics/e/orbits-and-celestial-mechanics/orbital-inclination/": {"t": "Orbital inclination", "s": "Angle measuring tilt of an orbit relative to a reference plane."}, "https://codexery.com/astronomy-space/e/astronomy-and-space/impact-event/": {"t": "Impact event", "s": "Collisions between astronomical objects that shape planets and life."}, "https://codexery.com/nebulae/e/nebulae/circumstellar-disc/": {"t": "Circumstellar disc", "s": "A circumstellar disc is a rotating ring of gas, dust, and debris around a star, key to planet formation."}, "https://codexery.com/geology-earth-science/e/geology-and-earth-science/impact-crater/": {"t": "Impact crater", "s": "A depression formed by hypervelocity impact of a smaller object."}, "https://codexery.com/notable-asteroids/e/notable-asteroids/binary-asteroid/": {"t": "Binary asteroid", "s": "Two asteroids orbiting a common center of mass."}, "https://codexery.com/classical-and-fluid-mechanics/e/classical-and-fluid-mechanics/precession/": {"t": "Precession", "s": "A change in the orientation of a rotating body's rotational axis."}, "https://codexery.com/astronomy-space/e/astronomy-and-space/local-group/": {"t": "Local Group", "s": "Galaxy group containing the Milky Way and Andromeda."}, "https://codexery.com/astronomy/e/astronomy/dwarf-galaxy/": {"t": "Dwarf galaxy", "s": "Small galaxies shaped by larger neighbors and dark matter.", "i": "https://codexery.com/astronomy/img/astronomy/dwarf-galaxy.webp", "c": "ESA/Hubble & NASA · CC BY 4.0"}, "https://codexery.com/globular-clusters/e/globular-clusters/globular-cluster/": {"t": "Globular cluster", "s": "Spheroidal star clusters bound by gravity, found in galactic halos."}, "https://codexery.com/geometry-and-shapes/e/geometry-and-shapes/spherical-coordinate-system/": {"t": "Spherical coordinate system", "s": "A system using distance and two angles to locate points in space."}, "https://codexery.com/space-probes-of-esa-japan-china-india/e/space-probes-of-esa-japan-china-india-and-the-ussr/gaia-spacecraft/": {"t": "Gaia (spacecraft)", "s": "ESA astrometry mission mapping a billion stars."}, "https://codexery.com/planets-stellar-astronomy/e/planets-and-stellar-astronomy/parsec/": {"t": "Parsec", "s": "Unit of distance defined by one arcsecond of parallax.", "i": "https://codexery.com/planets-stellar-astronomy/img/planets-and-stellar-astronomy/parsec.webp", "c": "via Wikipedia: Parsec · see source"}, "https://codexery.com/gigantes/e/gigantes/enceladus-giant/": {"t": "Enceladus (Giant)", "s": "Giant of Greek myth, buried under Mount Etna."}, "https://codexery.com/volcanic-mountains/e/volcanic-mountains/mount-etna/": {"t": "Mount Etna", "s": "Active stratovolcano on Sicily's east coast, among Europe's tallest."}, "https://codexery.com/globular-clusters/e/globular-clusters/messier-2/": {"t": "Messier 2", "s": "A large, old globular cluster in Aquarius."}, "https://codexery.com/globular-clusters/e/globular-clusters/messier-56/": {"t": "Messier 56", "s": "A metal-poor globular cluster in Lyra with a retrograde orbit."}, "https://codexery.com/globular-clusters/e/globular-clusters/messier-75/": {"t": "Messier 75", "s": "A dense globular cluster in Sagittarius, part of the Gaia Sausage."}, "https://codexery.com/globular-clusters/e/globular-clusters/messier-79/": {"t": "Messier 79", "s": "A globular cluster possibly extragalactic, disrupted by tidal forces."}, "https://codexery.com/globular-clusters/e/globular-clusters/ngc-1851/": {"t": "NGC 1851", "s": "Massive globular cluster with multiple stellar populations and exotic pulsars."}, "https://codexery.com/globular-clusters/e/globular-clusters/ngc-5286/": {"t": "NGC 5286", "s": "An ancient globular cluster in Centaurus, possibly linked to dwarf galaxy remnants."}, "https://codexery.com/globular-clusters/e/globular-clusters/ngc-2808/": {"t": "NGC 2808", "s": "A massive globular cluster with three generations of stars."}, "https://codexery.com/galaxies-and-their-properties/e/galaxies-and-their-properties/galactic-halo/": {"t": "Galactic halo", "s": "Extended spherical component of a galaxy beyond its visible parts.", "i": "https://codexery.com/galaxies-and-their-properties/img/galaxies-and-their-properties/galactic-halo.webp", "c": "ESO · CC BY 4.0"}, "/e/hypothetical-astronomical-objects/dark-galaxy/": {"t": "Dark galaxy", "s": "Hypothetical galaxies of dark matter, invisible to optical telescopes."}, "https://codexery.com/galaxies-and-their-properties/e/galaxies-and-their-properties/satellite-galaxy/": {"t": "Satellite galaxy", "s": "Smaller galaxies bound to larger hosts, key to cosmology.", "i": "https://codexery.com/galaxies-and-their-properties/img/galaxies-and-their-properties/satellite-galaxy.webp", "c": "Original:  AndrewRT Vector:  Slashme · via Wikipedia: Satellite galaxy · CC BY-SA 2.5"}, "https://codexery.com/astronomy-space/e/astronomy-and-space/interstellar-medium/": {"t": "Interstellar medium", "s": "Matter and radiation between star systems in a galaxy."}, "https://codexery.com/stars-and-stellar-objects/e/stars-and-stellar-objects/cepheid-variable/": {"t": "Cepheid variable", "s": "Pulsating stars used as cosmic distance markers."}, "https://codexery.com/elliptical-and-irregular-galaxies/e/elliptical-and-irregular-galaxies/mini-magellanic-cloud/": {"t": "Mini Magellanic Cloud", "s": "A smaller remnant of the Small Magellanic Cloud.", "i": "https://codexery.com/elliptical-and-irregular-galaxies/img/elliptical-and-irregular-galaxies/mini-magellanic-cloud.webp", "c": "ESA/NASA/JPL-Caltech/STScI · Public domain"}, "https://codexery.com/elliptical-and-irregular-galaxies/e/elliptical-and-irregular-galaxies/large-magellanic-cloud/": {"t": "Large Magellanic Cloud", "s": "A dwarf satellite galaxy of the Milky Way, rich in gas and star formation."}, "https://codexery.com/elliptical-and-irregular-galaxies/e/elliptical-and-irregular-galaxies/small-magellanic-cloud/": {"t": "Small Magellanic Cloud", "s": "A dwarf irregular galaxy and naked-eye object near the Milky Way."}, "/e/hypothetical-astronomical-objects/planets-beyond-neptune/": {"t": "Planets beyond Neptune", "s": "Hypothetical worlds beyond Neptune, from Planet X to Planet Nine."}, "https://codexery.com/astronomy/e/astronomy/hubble-s-law/": {"t": "Hubble's law", "s": "Galaxies recede faster the farther they are from Earth."}, "https://codexery.com/classical-mechanics/e/classical-mechanics/density/": {"t": "Density", "s": "Mass per unit volume, an intensive property of matter."}, "https://codexery.com/scientists-and-mathematicians/e/scientists-and-mathematicians/edwin-hubble/": {"t": "Edwin Hubble", "s": "The astronomer who revealed the universe beyond the Milky Way"}, "https://codexery.com/cosmology-concepts/e/cosmology-concepts/expansion-of-the-universe/": {"t": "Expansion of the universe", "s": "The increase in distance between gravitationally unbound parts of the universe."}, "https://codexery.com/cosmic-mysteries/e/cosmic-mysteries/dark-energy/": {"t": "Dark energy", "s": "The mysterious force accelerating the universe's expansion"}, "https://codexery.com/cosmology-concepts/e/cosmology-concepts/big-bang-nucleosynthesis/": {"t": "Big Bang nucleosynthesis", "s": "Model for light nuclei formation in the early universe."}, "https://codexery.com/astronomical-catalogues/e/astronomical-catalogues/2mass/": {"t": "2MASS", "s": "Infrared survey cataloging 300 million celestial objects.", "i": "https://codexery.com/astronomical-catalogues/img/astronomical-catalogues/2mass.webp", "c": "Legacy Surveys / D.Lang (Perimeter Institute) & Meli thev · CC BY 4.0"}, "https://codexery.com/stars-and-stellar-objects/e/stars-and-stellar-objects/cosmic-distance-ladder/": {"t": "Cosmic distance ladder", "s": "A sequence of methods for measuring distances to celestial objects."}, "https://codexery.com/space-probes-of-esa-japan-china-india/e/space-probes-of-esa-japan-china-india-and-the-ussr/planck-spacecraft/": {"t": "Planck (spacecraft)", "s": "ESA observatory that mapped the cosmic microwave background with unprecedented precision."}, "https://codexery.com/atmosphere/e/atmosphere/atmosphere/": {"t": "Atmosphere", "s": "A layer of gases enveloping an astronomical object, retained by gravity."}, "https://codexery.com/british-science-fiction-television-shows/e/british-science-fiction-television-shows/red-dwarf/": {"t": "Red Dwarf", "s": "A British sci-fi comedy about the last human in space."}, "https://codexery.com/biology-concepts/e/biology-concepts/life/": {"t": "Life", "s": "Life is a self-sustained process in matter, characterized by organization, metabolism, growth, adaptation, response to stimuli, and reproduction, ending in deat"}, "https://codexery.com/exoplanets/e/exoplanets/k2-18b/": {"t": "K2-18b", "s": "A sub-Neptune exoplanet in the habitable zone of a red dwarf, with a hydrogen-rich atmosphere and potential for a liquid ocean."}, "https://codexery.com/space-telescopes/e/space-telescopes/space-telescope/": {"t": "Space telescope", "s": "Telescopes in space avoiding atmospheric interference for astronomical observation."}, "https://codexery.com/exoplanets/e/exoplanets/the-james-webb-space-telescope/": {"t": "The James Webb Space Telescope", "s": "The largest space telescope, observing the infrared universe from beyond Earth's orbit."}, "https://codexery.com/meteorology/e/meteorology/greenhouse-effect/": {"t": "Greenhouse effect", "s": "The greenhouse effect is the trapping of heat by gases in a planet's atmosphere, raising its surface temperature."}, "https://codexery.com/thermodynamics-and-statistical-mechanics/e/thermodynamics-and-statistical-mechanics/internal-energy/": {"t": "Internal energy", "s": "Internal energy is a state function central to the first law of thermodynamics."}, "https://codexery.com/atmosphere/e/atmosphere/runaway-greenhouse-effect/": {"t": "Runaway greenhouse effect", "s": "A positive feedback loop that can desiccate a planet."}, "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."}, "https://codexery.com/biochemistry-and-cell-biology/e/biochemistry-and-cell-biology/abiogenesis/": {"t": "Abiogenesis", "s": "Natural process by which life arises from non-living matter."}, "https://codexery.com/exoplanets/e/exoplanets/super-earths/": {"t": "Super-Earths", "s": "Exoplanets more massive than Earth but lighter than ice giants."}, "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/electromagnetism-and-radiation/e/electromagnetism-and-radiation/radiation-pressure/": {"t": "Radiation pressure", "s": "Mechanical pressure from electromagnetic radiation momentum exchange."}, "https://codexery.com/cosmic-mysteries/e/cosmic-mysteries/oumuamua/": {"t": "Oumuamua", "s": "The first confirmed interstellar object to pass through the Solar System."}, "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-radiation/e/electromagnetism-and-radiation/ultraviolet/": {"t": "Ultraviolet", "s": "Electromagnetic radiation beyond violet, with both harmful and beneficial effects."}, "https://codexery.com/electromagnetism-and-radiation/e/electromagnetism-and-radiation/radiation/": {"t": "Radiation", "s": "Energy emitted as waves or particles through space or matter."}, "https://codexery.com/binary-and-multiple-stars/e/binary-and-multiple-stars/astrometric-binary/": {"t": "Astrometric binary", "s": "Some stars appear to circle an invisible point."}, "https://codexery.com/electricity-and-magnetism/e/electricity-and-magnetism/electromagnetism/": {"t": "Electromagnetism", "s": "One of four fundamental forces governing atomic and molecular interactions."}, "https://codexery.com/messier-objects/e/messier-objects/messier-32/": {"t": "Messier 32", "s": "Prototype compact elliptical satellite of the Andromeda Galaxy."}, "https://codexery.com/messier-objects/e/messier-objects/messier-object/": {"t": "Messier object", "s": "A famous catalogue of deep-sky objects compiled by Charles Messier."}, "https://codexery.com/messier-objects/e/messier-objects/pinwheel-galaxy/": {"t": "Pinwheel Galaxy", "s": "A large face-on spiral galaxy in Ursa Major."}, "https://codexery.com/astronomers-and-cosmologists/e/astronomers-and-cosmologists/charles-messier/": {"t": "Charles Messier", "s": "Charles Messier (1730–1817) was a French astronomer best known for compiling a catalogue of 110 nebulae and star clusters, now called the Messier objects, each ", "i": "https://codexery.com/astronomers-and-cosmologists/img/astronomers-and-cosmologists/charles-messier.webp", "c": "Ansiaux (1729—1786) (??) · via Wikipedia: Charles Messier · Public domain"}, "https://codexery.com/spiral-galaxies/e/spiral-galaxies/spiral-galaxy/": {"t": "Spiral galaxy", "s": "Spiral galaxies feature rotating disks, arms, and often a central bar."}, "https://codexery.com/stars-and-stellar-objects/e/stars-and-stellar-objects/constellation/": {"t": "Constellation", "s": "Patterns in the sky that guide stories and navigation."}, "https://codexery.com/constellations/e/constellations/ursa-major/": {"t": "Ursa Major", "s": "The Great Bear of the Northern Sky", "i": "https://codexery.com/constellations/img/constellations/ursa-major.webp", "c": "IAU and Sky & Telescope magazine (Roger Sinnott & Rick Fienberg) · via Wikipedia: Ursa Major · CC BY 3.0"}, "https://codexery.com/astronomy-space/e/astronomy-and-space/lenticular-galaxy/": {"t": "Lenticular galaxy", "s": "Intermediate galaxy type with disk and bulge, lacking spiral arms."}, "https://codexery.com/constellations/e/constellations/draco/": {"t": "Draco", "s": "A northern constellation named for the Greco-Latin word for serpent or dragon."}, "https://codexery.com/people-associated-with-astronomical/e/people-associated-with-astronomical-catalogues/john-louis-emil-dreyer/": {"t": "John Louis Emil Dreyer", "s": "Danish astronomer who compiled the New General Catalogue."}, "https://codexery.com/ngc-objects/e/ngc-objects/new-general-catalogue/": {"t": "New General Catalogue", "s": "A foundational catalogue of 7,840 deep-sky objects."}, "https://codexery.com/exoplanets-found-by-radial-velocity/e/exoplanets-found-by-radial-velocity/iota-draconis-c/": {"t": "Iota Draconis c", "s": "A long-period companion discovered in 2021 around the giant star Edasich."}, "https://codexery.com/philosophical-concepts/e/philosophical-concepts/hypothesis/": {"t": "Hypothesis", "s": "A proposed explanation requiring testable and reproducible prediction."}, "https://codexery.com/cosmology-concepts/e/cosmology-concepts/universe/": {"t": "Universe", "s": "The totality of all space, time, matter, and energy."}, "https://codexery.com/philosophical-concepts-and-theories/e/philosophical-concepts-and-theories/falsifiability/": {"t": "Falsifiability", "s": "A logical criterion for distinguishing scientific from non-scientific statements."}, "https://codexery.com/philosophical-concepts-and-theories/e/philosophical-concepts-and-theories/metaphysics/": {"t": "Metaphysics", "s": "Study of the most fundamental structure of reality."}, "https://codexery.com/black-holes/e/black-holes/black-hole-cosmology/": {"t": "Black hole cosmology", "s": "Model where our universe is inside a black hole."}, "https://codexery.com/cosmology-concepts/e/cosmology-concepts/anthropic-principle/": {"t": "Anthropic principle", "s": "Observable universe must allow observers to exist."}, "https://codexery.com/historical-figures/e/scientists/anaximander/": {"t": "Anaximander", "s": "Pre-Socratic philosopher who introduced the apeiron and advanced early science."}, "https://codexery.com/religious-cosmologies/e/religious-cosmologies/buddhist-cosmology/": {"t": "Buddhist cosmology", "s": "Buddhist cosmology describes the universe through karma and rebirth."}, "https://codexery.com/philosophical-traditions/e/philosophical-traditions/atomism/": {"t": "Atomism", "s": "Philosophy that all matter is composed of indivisible atoms."}, "https://codexery.com/historical-figures/e/notable/democritus/": {"t": "Democritus", "s": "The laughing philosopher who developed atomism from Leucippus's ideas."}, "https://codexery.com/historical-figures/e/notable/epicurus/": {"t": "Epicurus", "s": "Ancient Greek philosopher who founded Epicureanism."}, "https://codexery.com/authors-poets/e/authors-and-poets/lucretius/": {"t": "Lucretius", "s": "Roman poet and philosopher, author of De rerum natura."}, "https://codexery.com/historical-eras/e/historical-eras/middle-ages/": {"t": "Middle Ages", "s": "The middle epoch between classical antiquity and the modern period.", "i": "https://codexery.com/historical-eras/img/historical-eras/middle-ages.webp", "c": "via Wikipedia: Middle Ages · see source"}, "https://codexery.com/philosophical-concepts/e/philosophical-concepts/existence/": {"t": "Existence", "s": "The state of having being or reality, contrasted with nonexistence and essence."}, "https://codexery.com/media-and-publishing/e/media-and-publishing/scientific-american/": {"t": "Scientific American", "s": "Oldest continuously published U.S. magazine."}, "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/astronomers-and-astrophysicists/e/astronomers-and-astrophysicists/giovanni-domenico-cassini/": {"t": "Giovanni Domenico Cassini", "s": "Giovanni Domenico Cassini, an Italian-French mathematician, astronomer, astrologer, and engineer, was born in Perinaldo, near Imperia, in the County of Nice, pa"}, "https://codexery.com/astronomers-and-astrophysicists/e/astronomers-and-astrophysicists/william-herschel/": {"t": "William Herschel", "s": "Discoverer of Uranus and infrared radiation", "i": "https://codexery.com/astronomers-and-astrophysicists/img/astronomers-and-astrophysicists/william-herschel.webp", "c": "Lemuel Francis Abbott · via Wikipedia: William Herschel · Public domain"}, "https://codexery.com/mathematicians/e/mathematicians/jean-le-rond-d-alembert/": {"t": "Jean Le Rond d'Alembert", "s": "French mathematician, physicist, philosopher, and music theorist."}, "https://codexery.com/literary-giants/e/literary-giants/voltaire/": {"t": "Voltaire", "s": "French Enlightenment writer and advocate of civil liberties"}, "https://codexery.com/human-anatomy/e/human-anatomy/human-eye/": {"t": "Human eye", "s": "The human eye is a sensory organ in the visual system that reacts to visible light allowing eyesight."}, "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/textiles-in-folklore/e/textiles-in-folklore/neith/": {"t": "Neith", "s": "Ancient Egyptian goddess of war, motherhood, and weaving."}, "https://codexery.com/stars-of-taurus/e/stars-of-taurus/104-tauri/": {"t": "104 Tauri", "s": "G-type main-sequence star with a debris disk and possible exoplanet."}, "https://codexery.com/stars-of-libra/e/stars-of-libra/theta-librae/": {"t": "Theta Librae", "s": "An aging giant star near the ecliptic in Libra."}, "https://codexery.com/astronomy-space/e/astronomy-and-space/light-year/": {"t": "Light-year", "s": "A unit of distance, not time, used for astronomical scales."}, "https://codexery.com/earth/e/earth/history-of-earth/": {"t": "History of Earth", "s": "Earth's 4.54-billion-year journey from molten rock to diverse life."}, "https://codexery.com/asteroid-surveys/e/asteroid-surveys/iras/": {"t": "IRAS", "s": "First space telescope to survey the entire infrared sky."}, "https://codexery.com/nasa-space-probes/e/nasa-space-probes/wide-field-infrared-survey-explorer/": {"t": "Wide-field Infrared Survey Explorer", "s": "NASA infrared survey that mapped the entire sky."}, "https://codexery.com/graphs-and-data-visualization/e/graphs-and-data-visualization/time-series/": {"t": "Time series", "s": "A sequence of data points ordered chronologically.", "i": "https://codexery.com/graphs-and-data-visualization/img/graphs-and-data-visualization/time-series.webp", "c": "HilberTraum · CC BY-SA 3.0"}, "https://codexery.com/taxonomy-evolution/e/taxonomy-and-evolution/fossil/": {"t": "Fossil", "s": "Fossils are preserved remains of ancient life, key to evolution."}, "https://codexery.com/geology/e/geology/cretaceous-paleogene-extinction-event/": {"t": "Cretaceous–Paleogene extinction event", "s": "Mass extinction that ended the age of non-avian dinosaurs.", "i": "https://codexery.com/geology/img/geology/cretaceous-paleogene-extinction-event.webp", "c": "Wilson44691 · CC0"}, "https://codexery.com/media-and-publishing/e/media-and-publishing/nature-journal/": {"t": "Nature (journal)", "s": "British weekly journal of peer-reviewed natural science research.", "i": "https://codexery.com/media-and-publishing/img/media-and-publishing/nature-journal.webp", "c": "ESO/M. Kornmesser (photo displayed on the magazine cover) · via Wikipedia: Nature (journal) · CC BY 4.0"}, "https://codexery.com/constellations/e/constellations/hydra-constellation/": {"t": "Hydra (constellation)", "s": "The largest constellation, a water snake straddling the celestial equator."}, "https://codexery.com/astronomical-myths/e/astronomical-myths/phaethon/": {"t": "Phaethon", "s": "Mortal son of Helios who disastrously drove the sun chariot."}, "https://codexery.com/greek-myths/e/greek-myths/helios/": {"t": "Helios", "s": "Greek god personifying the Sun, guardian of oaths and sight."}, "https://codexery.com/greek-myths/e/greek-myths/zeus/": {"t": "Zeus", "s": "King of the gods, sky and thunder deity."}, "https://codexery.com/discoverers-of-astronomical-objects/e/discoverers-of-astronomical-objects/karl-ludwig-harding/": {"t": "Karl Ludwig Harding", "s": "German astronomer who discovered the asteroid Juno in 1804."}, "https://codexery.com/notable-asteroids/e/notable-asteroids/asteroid-family/": {"t": "Asteroid family", "s": "Asteroid families are collisional fragments sharing similar orbital elements."}, "https://codexery.com/discoveries-by-michael-e-brown/e/discoveries-by-michael-e-brown/michael-e-brown/": {"t": "Michael E. 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"https://codexery.com/philosophical-concepts/e/philosophical-concepts/inference/": {"t": "Inference", "s": "Logical reasoning from premises to conclusions.", "i": "https://codexery.com/philosophical-concepts/img/philosophical-concepts/inference.webp", "c": "Gnathan87 · CC0"}, "https://codexery.com/planets-stellar-astronomy/e/planets-and-stellar-astronomy/planetary-system/": {"t": "Planetary system", "s": "A star's family of orbiting worlds and debris."}, "https://codexery.com/classical-and-continuum-mechanics/e/classical-and-continuum-mechanics/tidal-force/": {"t": "Tidal force", "s": "Differential gravity stretches bodies and drives tides across the cosmos."}, "https://codexery.com/moons-of-saturn/e/moons-of-saturn/rhea-moon/": {"t": "Rhea (moon)", "s": "Second-largest moon of Saturn, smallest hydrostatic body."}, "https://codexery.com/moons-of-saturn/e/moons-of-saturn/equatorial-ridge-on-iapetus/": {"t": "Equatorial ridge on Iapetus", "s": "Iapetus's equatorial ridge is the Solar 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"s": "CubeSat that verified the Lunar Gateway's planned orbit."}, "https://codexery.com/orbits-and-celestial-mechanics/e/orbits-and-celestial-mechanics/earth-s-orbit/": {"t": "Earth's orbit", "s": "Earth's elliptical orbit around the Sun defines the year and seasons."}, "https://codexery.com/earth/e/earth/origin-of-water-on-earth/": {"t": "Origin of water on Earth", "s": "Earth's water came from both internal hydrogen and outer Solar System delivery."}, "https://codexery.com/greek-myths/e/greek-myths/the-titans/": {"t": "The Titans", "s": "A generation of deities in Greek mythology."}, "https://codexery.com/solar-gods/e/solar-gods/hyperion-titan/": {"t": "Hyperion (Titan)", "s": "Titan father of the sun, moon, and dawn."}, "https://codexery.com/human-spaceflight-programs/e/human-spaceflight-programs/apollo-program/": {"t": "Apollo program", "s": "The United States human spaceflight program that landed the first humans on the Moon."}, 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"https://codexery.com/trans-neptunian-objects/img/trans-neptunian-objects/alan-stern.webp", "c": "NASA / Eric James · Public domain"}, "https://codexery.com/deserts-and-drylands/e/deserts-and-drylands/mojave-desert/": {"t": "Mojave Desert", "s": "Smallest and driest of the four North American deserts."}, "https://codexery.com/missions-to-the-sun/e/missions-to-the-sun/stereo/": {"t": "STEREO", "s": "Two spacecraft providing stereoscopic views of the Sun."}, "https://codexery.com/asteroids/e/asteroids/yorp-effect/": {"t": "YORP effect", "s": "Solar radiation torques alter asteroid spin and orientation over time."}, "https://codexery.com/units-measurement/e/units-and-measurement/kelvin/": {"t": "Kelvin", "s": "British scientist who developed the absolute temperature scale."}, "https://codexery.com/geology-earth-surface/e/geology-and-earth-surface/rock-geology/": {"t": "Rock (geology)", "s": "Naturally occurring solid aggregate of minerals or mineraloid matter.", "i": 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"https://codexery.com/space-missions/img/space-missions/parker-solar-probe.webp", "c": "via Wikipedia: Parker Solar Probe · see source"}, "https://codexery.com/planets-and-dwarf-planets/e/planets-and-dwarf-planets/fictional-planets-of-the-solar-system/": {"t": "Fictional planets of the Solar System", "s": "Hypothetical planets persist in fiction beyond scientific refutation."}, "https://codexery.com/philosophical-movements-and-schools/e/philosophical-movements-and-schools/ancient-greek-philosophy/": {"t": "Ancient Greek philosophy", "s": "Ancient Greek philosophy shaped Western thought from its 6th century BCE origins."}, "https://codexery.com/historical-figures/e/notable/aristotle/": {"t": "Aristotle", "s": "Ancient Greek philosopher and polymath, founder of the Peripatetic school."}, "https://codexery.com/esoteric-cosmology/e/esoteric-cosmology/classical-element/": {"t": "Classical element", "s": "Ancient substances proposed to explain all matter across multiple cultures."}, 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