{"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/space-program-of-the-united-states/e/space-program-of-the-united-states/sentry-monitoring-system/": {"t": "Sentry (monitoring system)", "s": "Automated system monitoring asteroid impact risks over 100 years."}, "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/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/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/named-stars/e/named-stars/sun/": {"t": "Sun", "s": "The Sun is the central star of the Solar System."}, "https://codexery.com/countries-and-territories/e/countries-and-territories/sudan/": {"t": "Sudan", "s": "Northeast African nation with ancient kingdoms and modern conflicts."}, "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/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."}, "https://codexery.com/successful-space-missions/e/successful-space-missions/apollo-12/": {"t": "Apollo 12", "s": "Second crewed Moon landing; precise landing near Surveyor 3.", "i": "https://codexery.com/successful-space-missions/img/successful-space-missions/apollo-12.webp", "c": "NASA / Buzz Aldrin · Public domain"}, "https://codexery.com/egyptian-mythology-in-popular-culture/e/egyptian-mythology-in-popular-culture/99942-apophis/": {"t": "99942 Apophis", "s": "A near-Earth asteroid that briefly threatened Earth in 2029."}, "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/orbits-and-celestial-mechanics/e/orbits-and-celestial-mechanics/horseshoe-orbit/": {"t": "Horseshoe orbit", "s": "A co-orbital motion tracing a horseshoe shape relative to a larger body."}, "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/disasters/e/historic-disasters/the-tunguska-event/": {"t": "The Tunguska event", "s": "Largest recorded impact event in history, flattening Siberian forest."}, "https://codexery.com/regions-cultural-spheres/e/regions-and-cultural-spheres/antarctica/": {"t": "Antarctica", "s": "Earth's southernmost, coldest, and least-populated continent."}, "https://codexery.com/us-cities/e/us-cities/tucson-arizona/": {"t": "Tucson, Arizona", "s": "Second-largest city in Arizona, founded as a Spanish presidio in 1775."}, "https://codexery.com/notable-asteroids/e/notable-asteroids/dark-comet/": {"t": "Dark comet", "s": "Asteroids that move like comets but lack a coma or tail."}, "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/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/constellations/e/constellations/virgo/": {"t": "Virgo", "s": "Largest zodiac constellation, rich in galaxies and exoplanets."}, "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/ancient-greek-astronomy/e/ancient-greek-astronomy/geocentrism/": {"t": "Geocentrism", "s": "Earth-centered model of the cosmos, dominant for over 1,500 years."}, "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/classical-mechanics/e/classical-mechanics/momentum/": {"t": "Momentum", "s": "Vector quantity equal to mass times velocity."}, "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/lines-hemispheres/e/lines-and-hemispheres/southern-hemisphere/": {"t": "Southern Hemisphere", "s": "The Southern Hemisphere is Earth's southern half, mostly ocean."}, "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/pavo-constellation/": {"t": "Pavo (constellation)", "s": "A southern constellation named for the peacock, part of the Southern Birds.", "i": "https://codexery.com/constellations/img/constellations/pavo-constellation.webp", "c": "MichaelMaggs · CC BY-SA 3.0"}, "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/space-missions/e/space-missions/osiris-rex/": {"t": "OSIRIS-REx", "s": "First U.S. spacecraft to return samples from an asteroid."}, "https://codexery.com/sample-return-missions/e/sample-return-missions/sample-return-mission/": {"t": "Sample-return mission", "s": "Spacecraft missions that collect and return extraterrestrial samples to Earth."}, "https://codexery.com/u-s-states/e/u-s-states/north-carolina/": {"t": "North Carolina", "s": "Southern state known for first flight and early independence call."}, "https://codexery.com/classical-mechanics-and-dynamics/e/classical-mechanics-and-dynamics/rotation/": {"t": "Rotation", "s": "Rotational motion leaves at least one point unchanged."}, "https://codexery.com/minerals-and-gems/e/minerals-and-gems/magnetite/": {"t": "Magnetite", "s": "Most magnetic naturally occurring mineral, key to paleomagnetism and compasses."}, "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/astronomy-space/e/astronomy-and-space/minor-planet/": {"t": "Minor planet", "s": "A Sun-orbiting body that is neither a planet nor a comet."}, "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/geology-earth-science/e/geology-and-earth-science/mineralogy/": {"t": "Mineralogy", "s": "Scientific study of minerals, their properties, and crystal structures."}, "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/notable-asteroids/e/notable-asteroids/nysa-polana-complex/": {"t": "Nysa–Polana complex", "s": "Overlapping asteroid families in the inner main belt."}, "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/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/u-s-states/e/u-s-states/utah/": {"t": "Utah", "s": "A landlocked state shaped by Mormon settlement and desert geography."}, "https://codexery.com/chemistry-materials/e/chemistry-and-materials/organic-compound/": {"t": "Organic compound", "s": "Carbon-based compounds central to life and chemistry."}}